Toyota EGR valve: understanding exhaust gas recirculation valves

What is an exhaust gas recirculation (EGR) valve?

The EGR valve in your Toyota is fitted within the exhaust system and allows some of the gases produced during the combustion process to be re-burnt within the combustion chamber for a second and more effective time. This occurs when the correct engine operating conditions are met and, in turn, serves to reduce harmful emissions.

What does an EGR valve do?

The process of recirculating precise quantities of exhaust gases back into the combustion chamber has a number of advantages. In petrol engines, it helps to lower combustion temperatures and reduces the chance of spontaneous combustion, also known as knock. This allows the engine control unit (ECU) to dilute the air/fuel mixture and reduce petrol consumption.

In diesel engines, the role of the EGR valve is even more important. Routing exhaust gases back into the combustion chamber also lowers combustion temperatures, but the primary benefit is the reduced formation of nitrous oxide (NOx) particulates. In addition, the reappearance of spent exhaust gases within the combustion chamber enables the engine to neutralise these particulates through secondary burning.

Does the work of the EGR valve relate to the function of the particulate filter in diesel engines?

Yes, but indirectly. The neutralising of NOx soot within the combustion chamber reduces the quantity of this material heading into the diesel particulate filter (DPF) installed further down the exhaust system. This increases the time period between regeneration procedures and the service life of the DPF itself.

Why might an EGR valve fail?

Its location within the direct path of flowing exhaust gases means that soot can accumulate around the EGR valve and block its free movement. It is possible to mitigate this by ensuring the vehicle is regularly driven at sustained speeds above 40mph. Constant use of any vehicle in low-speed, urban environments with frequent stops will accelerate the amount of soot collecting around the EGR valve.

How can I tell if the EGR valve in my car is failing?

A failing EGR valve will affect the performance and economy of your engine, though it is likely that the ECU will notice the issue and alert the driver through a dashboard warning light before any physical symptoms are experienced. These symptoms may include rough idling, hesitance in acceleration and a loss in fuel economy.

What do I need to do if I see the engine check light illuminate?

Return the car to your main dealer to be checked. If the fault code displayed by the diagnostic equipment relates to exhaust gas recirculation, the likelihood is that the valve will need to be either cleaned or replaced. Cleaning is much cheaper than replacement, so it is prudent to react immediately to all warning lights.

See also: Toyota DPF: understanding your diesel particulate filter

Comments (113)

  1. Hi where exactly is the EGR valve position on a Toyota Land Cruiser v8 diesel 2013 model UK.
    Tia thor

  2. I have a 2008 Toyota Yaris d4d we believe the egr valve is failing and tbh the only thing wrong is fuel I seem to be using a lot I mean I do about 350 miles a week atm due to work I’ve had an engine light on for months but the car has never failed I want to take the egr valve out for a clean but am unsure we’re it’s located in my vechile

  3. Hey. My lc200 2013. I got some petrol from gallon i had. My fuel ended up.. And when drove a km my car started missing up. And soon after if i press acceleration full hard. My rpm gets stuck at 3. And car just loses power. Soon i lift my feet up and press it very slowly and gently, it goes well. But rpm dosent cross 3.
    When i start in the morning. Nd give full throttle, it does well. Soon engine get heat up. My rpm comes 3.
    To fix this issue. I cleaned my fuel tank. Changed fuel pump, fuel filter,and all other things to clean the fuel line. But problem was still there. Got my catalytic converter cleaned, changed spark plugs, cleaned oxygen sensors and mass air flow sensor. But problem is still there. Added up mean while fuel injector cleaners and good high octane, but no luck.
    Last night my mac found out there is a leakage on main air vacuum head. Top body of engine. We managed to fix that. Now rpm goes upto 4. Nd no more. Can u please help me on this…

    Now the only thing left is EGR value and Throttle position sensor….. suggest pls.

    1. Hi Ali,
      Thanks for getting in touch with us.
      We would recommend contacting the Toyota distributor in your region for further help with your query.

  4. Sadly my Egr on my iQ is blocked. Toyota dealer wants more than the car is worth to fit a new one even though many were done as a courtesy as it was a design fault in early models. I’m going to have to give up on it… I thought it would be better made. I’ve had 5 Toyotas and this will be the last one.

    1. Hi James,

      Thanks for getting in touch.
      We’re really sorry to hear about the issue you’re having with your iQ and that you are unhappy with your experience with us.
      If you would like to raise this further, we would recommend contacting our Customer Relations team as they are best placed to explore your situation further.
      You can contact them via this link:


  5. Hi I have Toyota auris hybrid 2015 shaking engine and rattling noise on acceleration,it happens when the car is hot and especially when the battery level is very low ,I guess is when as more load .
    If I accelerate and keep it steady at 20mph I can feel a constant vibration but goes away once accelerating more….like if you’re driving on a rippled surface ….that is only when engine is on , doesn’t happen on electric only.
    The noise it sound like a tapping coming from the engine when slowly accelerating from 0 that goes away as soon I give more gas ,is annoying wile in the traffic.
    Ideas,? Can the sparks plugs be the problem?they been changed 25k ago and EGR valve…..,I cleaned the Mansfield and the EGR pipe recently but problem still there.
    Like I said is only when the engine is up to running temperature.
    Not sure but the noise may be coming from the tranx?

    1. Hi Ebo, I have a Toyota Auris Hybrid 2014 and I have exactly the same problem, most people on different websites and a mechanic told me is the EGR valve.
      I had my catalytic converter stolen and I replaced it with aftermarket one, I don’t know if this can be the reason or not?? Do you have the original catalytic converter or you also have changed it? I am trying to understand where the problem comes from.

  6. I have a Toyota land cruiser 2010 diesel engine 1 VD series, I changed injectors, and is smocking badly ,black smock. What can be the problem?

    1. Hi I have Toyota auris hybrid 2015 Slightly shaking engine and rattling noise on acceleration,it happens when the car is hot and especially when the battery level is very low ,I guess is when as more load .
      If I accelerate and keep it steady at 20mph I can feel a constant vibration but goes away once accelerating more….like if you’re driving on a rippled surface ….that is only when engine is on , doesn’t happen on electric only.
      The noise it sound like a tapping coming from the engine when slowly accelerating from 0 that goes away as soon I give more gas ,is annoying wile in the traffic.
      Ideas,? Can the sparks plugs be the problem?they been changed at 80k and EGR valve And the car done now 117k …..,I cleaned the egv pipe And the manifield but problem still there.
      Like I said is only when the engine is up to running temperature.
      Not sure but the noise may be coming from the tranx?

      1. Hi Ebo,

        Thanks for getting in touch. We’re sorry to hear about the issue you’re experiencing. Without assessing the car ourselves, we can’t accurately suggest what may be causing this. Therefore, we would recommend contacting your nearest Toyota centre to discuss this further. They are best equipped to run a diagnosis and make any necessary recommendations. You can find the contact details for your nearest dealer here:


  7. I have Toyota Noah engine model TA-AZR60G with high fuel consumption running 6 km/Ltr..EGR valve might be the problem.Tried to replace Throttle body,Fuel Pump,Spark plug but no improvement

  8. Quick update. I found a code P042E with my basic OBDII Scanner, it means that the powertrain control module (PCM) has detected a problem with the exhaust gas recirculation (EGR) valve control system.

    Luckily my 2015 Toyota Avensis had a recall on EGR valve. Today Toyota has replaced the EGR valve as part of recall and no warranty required for this as this is recall.

    Engine light and Check parking brake light is gone now :).

    So if you have this error please check if you have a recall for EGR valve and get it done free, if not than get the EGR valve changed at your cost as this is not covered under warranty.

    Hopefully this helps everyone battling with this problem.

  9. Hi I have a Toyota Avensis 2015 and having the same problem. Check parking brake system with Engine management light on. Just done 80000 miles. Booked with Toyota to have a look in couple of weeks. Long journeys are fine it comes up on short journeys only. Fuel economy has gone down and car does not pick up quickly due to limp mode.

    Just came to know that there is a free EGR Valve recall on Toyota avensis as it is a common problem. Can someone please confirm this as it looks to be EGR valve problem.

  10. Yesterday my Auris 2012 started to shake and loud noise coming from left side (electric motor I guess), weird thing is no light or warning came on dashboard, was difficult to drive at low speed. Took it to garage today and the guy knew straight away without even lifting the bonnet that EGR is blocked. After cleaning the manifold and valve the car is back to normal, but was told I have to do the same thing again after 5000 miles because I only use the car for small journey at low speed. Did Toyota make Auris only for motorway drivers?

    1. Hi,

      We’re glad you’re back on the road. Constant use of any vehicle in low-speed environments with frequent stops will accelerate the amount of soot collecting around the EGR valve. Its location within the direct path of flowing exhaust gases means that soot can accumulate around the EGR valve and block its free movement. It is possible to mitigate this by ensuring the vehicle is regularly driven at sustained speeds above 40mph. Thanks.

  11. My 1.8 Petrol 2010 Verso Valvematic drives like a dream and ticks overs well.BUT driving on short journeys for 3 to 4 months warning light came on check VSC system snd car went into limp mode.
    Resolved by tightening and eventually replacing Petrol cap.
    One month on not realising short journeys NOT ALLOWED car warning lights on again.Having read various forums I have taken car on regular weekly burn ups and that seems to cure problem temporarily.
    So now having changed petrol from 95 octane supermarket fuel to Shell higher grade and about to have oil change to O W 20 ..Last service had used higher grade 15w 40 and this I believe can impact on soot residue in EGR valve.Car serviced regularly BUT having read many comments from Toyota owners with low mileage experiencing EGR valve issues even when doing high speeds regularly I am very concerned that this problem rests in Toyotas hands and although I may need to replace EGR valve at 50000 miles I guess wear and tear will be the answer offered by Toyota.
    On a high note I believe the car other than EGR issue is brilliant and such a shame that Toyota are not addressing this issue for newer low mileage cars

    1. Update at 21.12.18 since oil change and now using Shell V power petrol car has done 350 miles since last limp mode and VSC warning light.
      I am trying to give car a good motorway thrashing for 5 to ten minutes at 3500 to 4000 RPM twice weekly and guess this may now have met the cars computer expections for engine performance .Limp mode tended to be whilst driving round town and has never happened at high speed. Resetting the MPG readout to zero whilst driving approx 60 mph the car has been showing up to 60 MPG.Must say I am impressed with cars performance now and hopefully the Vsc warning light and Limp mode have gone away.

  12. Hi, I have a “05”plate Deisel RAV4 which has a recurrent problem.
    Engine warning light came on & so took car to local Toyota Specialist who diagnosed EGR valve needed replaced, which was done.
    3 weeks later light comes on. Garage very apologetic & said must have been faulty, & replaced free of charge.
    3 weeks later light back on, so said it can only be sender unit, which replaced
    A couple of weeks later light back on.
    Took to main agents who ” Regenerated”. Within a week light back on.
    Good news is that car doesn’t go into “limp mode”& goes well.
    What do I do to make light stays off???

    1. Hi Howard,
      Thanks for getting in touch.
      After speaking to our Technical Team, we would advise you to go to your local Toyota Centre to get the car diagnosed.
      Unfortunately, we cannot diagnose this problem without seeing the technical data from the car.
      If you need assistance locating your nearest Toyota Centre please follow this link:
      We hope this helps.

    2. Clean manifold out,I had same problems,had new egr new maf sensor.cleared lights came back on 2hours later.when manifold was cleaned lights went out without clearing codes been ok since.

  13. Hi.

    I am in London I have Avensis 2014 D4D 2.0

    Its have Check Parking Break Message on Dashboard and engine light on too.

    AA car recovery came and check with computer and told me 3 things

    1 – EGR Problem –

    2 – Clutch Pedal Sensor Problem

    3 – Accelerator Pedal Sensor Problem

    Please help…. What shall I do know….

    I am planing to take my car to my private garage I hope they will fix…..

    I have same problem last year and my garage clean EGR Valve.

    Any advise

  14. Same problem here, Fj66 plate (so about 1.5 years old) Toyota Avensis 1.6 Diesal with only 15,000 miles on the clock and I’m already getting an EGR problem. As with others, this presented as a ‘Check Parking Brake’ error along with an engine alert and reduced performance/limp mode.

    We invested most of our savings to buy a new car to avoid problems like this. My drive to work is 95% motorway driving so should be optimal conditions for keeping the EGR clear.

    Am I going to have this problem every 15,000 miles? From this thread, it looks like a very common problem with Toyota Diesel engines?


      1. Thanks, its booked in with my local dealer next but unfortunately this doesn’t help me get to work and back until then (I’m assuming that there’s not courtesy car available with the warranty?)

        1. Hi Bob,
          With regards to getting a courtesy car, we’d advise discussing this with your local dealer. Thanks.

      2. CHECK PARKING BRAKE SYSTEM came on the dashboard, along with engine warning light, master warning, break pads light.

        Car is 28k miles, 1.6 d4d, I am using it in weekends as a taxi since April 2019, done cca 4000 miles as a taxi.

        Took it to Toyota, they said that the fault doesn’t have to do with the breaks, is just to make the owner bringing the car in.

        Diagnosis: MAP filter had to be cleaned 

        It happened 3 times in 2 weeks. Warning came back after couple of miles each time after taking it to Toyota.

        3rd time they are saying that the manifold is clogged with carbon, cannot be cleaned, replacement is very expensive and basically they advised me to part exchange the car.

        They are blaming on the fact that I use it as a taxi. I don’t use start/stop, always changing gears at  at least 2000rpm, at least 150 miles motorway weekly.

        Are they right saying that the warranty doesn’t cover the job?

        Any thoughts on what my options are?

        Many thanks in advance.

        1. Hi there,

          Thanks for getting in touch. We’re sorry to hear you’re experiencing these issues. If you could please provide a VIN number we will be able to assist you further.


          1. Thanks for coming back to me.
            The diagnosis had from Toyota Liverpool this morning was: ” POOBD stored in engine ecu- fault caused by carbon build up in manifold/egr/cooler etc. “

          2. Thank you for this information. We will send you an email now and if you could please respond with contact details such as full name and phone number we will open a case with our customer relations team to investigate this further.


  15. Hi,

    I’m not usually one to comment on these things but has this article been fact checked/written by someone with technical knowledge?

    My understanding of EGR, is that the exhaust gas, with its depleted volume of O2 is sent back to the engine in order to reduce the amount of oxygen involved in the burning of the fuel. This reduction in quantity, partial pressure?, reduces peak combustion temperatures.
    Thermal NOx production (one of several routes to NOx production in combustion) is directly tied to peak combustion temperatures.

    The descriptions of Nitrous Oxide particulates is highly misleading as well, suggesting particulates and nitrous oxides are linked. Nitrous oxide is a gaseous compound, probably more accurately described as a molecule. Particulates are solid unburnt products of combustion such as carbon.

    I am unsure on the second pass aiding with reduction of particulates, I would have thought that EGR may increase particulates in some respects (decreased combustion temperatures leading to longer burnout times), but have no sources to quote or the knowledge on this point.
    DPF’s handle particulate matter by collecting the unburnt carbon, and then burning it off on a hot surface that may have some sort of catalyst present, but almost certainly does not tackle NOx emissions.

    I would also question whether EGR’s improve efficiency, or reduce petrol consumption as you have put it, as my understanding is that EGR effectively retards combustion to reduce thermal NOx production????

    I’d be interested to see if any revisions are required to the article, or alternatively if you could link to some articles to aid with my understanding..



    1. Hi Mike,
      Thanks for getting in touch. We’ve spoken to our technical team they say:
      Nitrogen Oxide has no connection with solid particles (soot) emitted during combustion. NOx is produced during high temperature combustion,
      The most common way to reduce production of NOx is to lower the temperature of the combustion.
      The EGR valve is widely used (EGR: Exhaust Gas Recycling).
      The principal of the EGR is very simple, the engine runs on a specific ratio of fuel and air, the air has a certain content of oxygen (O2).
      This oxygen promote the burning of the fuel to produce the energy to turn the engine.
      To limits the temperature produced, some of the exhaust gas (oxygen depleted) is recycled into the combustion chamber, this gas has no combustion property and replace partially the oxygen rich air inducted into the engine.
      This limit the amount of oxygen, this in turn reduces the energy and heat produced during the combustion.
      Due to that, the production of NOx is reduced.
      This means in fact that against general belief the use of the EGR valve DOES NOT improve the efficiency of the engine but drastically reduces it. But the software controlling the engine management has a strategy making the system imperceptible to the driver. As for the fuel consumption, this is debatable, to keep the O2 and fuel ratio optimum the engine management computer reduces the amount of fuel injected when the EGR lets the exhaust gas back in the engine (so some saving) but because the engine is less efficient on certain conditions it may counterbalance the saving.
      Note: a faulty EGR valve (stuck open) will induce a drastic increase of soot expelled out in the atmosphere due to the wrong fuel/air ratio.
      NO = Nitrogen oxide the X = Covers NO and NO2 at the same time.
      Hope this helps.

  16. My Toyota Auris (2012) broke down whilst driving. The car lost all power. Luckily it was peak time and I was in heavy traffic so managed to move the car to the side. Absolutely no warning signs on the dashboard. Called the RAC who ran all test but again could not find any faults. RAC guy got a hammer out and hit something and car started. He followed me Jemca Edgware Road and notified the service department what he had done to get my car started.
    Next day I am told I need new EGR valve which including parts and labour is over £500. The car is 5 years and 11 months old so out of warranty period.
    Why was there no warning sign on Dashboard? Should they have cleaned the valve based on other comments on blog since it would have been cheaper? The car has just done 30,009 miles. Is this a common problem on Hybrid Auris ? Any advice would be appreciated. Thank you.

    1. Hi Gemini,
      We’re sorry to hear this. Please could you provide your reg or VIN number so we can look further in to this for you. Thanks.

  17. I’m thinking of doing away with my EGR completely and bypassing it. 2010 Prius.

    I work a lot with smaller engines and these are nothing but trouble for little gain. Am I nutz and this will be a complete failure??

    1. Hi Dan,
      Thanks for getting in touch. We would not recommend any modification to the vehicle or deviation from standard spec. Thanks.

  18. Same problem here. 11600km driven, 7 months old. 4 warning lights (engine, exclamation mark, parking brake and one more) came on and display showed “Check Parking Brake System”. A quick stop at the dealer learned that the EGR vale needed to be replaced. Not sure how the EGR valve has an impact on the parking brake system, but I will leave that to the experts to judge.

    1. Hi Marcel,
      Thanks for getting in touch. Please could you provide us with your reg or VIN number to we can look further in to this for you. Many thanks.

    2. Hi Marcel. I am sitting in the local Toyota garage and had the same identical problem. They are going to fit a new EGR valve next week. Car is diesel 2 litre Avensis, just 2 years old and 20000miles.

    3. Just got the same problem with same warnings. Dealer says EGR valve.
      Running on low power.

      I just can’t believe this.
      15 month old car, 7600 miles and this sort of problem. I have done a fair mix of motorway and urban driving, as I have for the last 15 years in a selection of cars, without a problem.

      I was delighted to buy a Toyota as probably my last new car, believing it to be a high quality car and would run hopefully trouble free for the next 10 years when I will be 80 years old and possibly not driving after that age.
      Now I’m let down completely and have no confidence whatsoever in the car.
      I will be selling it once repaired and replacing it with a petrol engined car which will most certainly NOT be a Toyota.

      Delight and confidence in my new car totally ruined.

      Dismayed by Toyota.

      1. Hi Issac,
        Thanks for getting in touch. The EGR system, allows a small amount of exhaust gas to flow into the intake passage, reducing the peak temperature in the engine combustion chamber.
        The operation of this system depends on the engine driving conditions and actual amount of the EGR valve opening.
        Driving conditions are determined by the engine speed sensor, vacuum sensor, intake air temperature sensor, coolant temperature sensor, accelerator position and throttle position sensors.
        Hope this helps.

  19. 2016 model Toyota Avensis 1.6 D driven 20 thousand km. EGR-valve failure. Car gave me fault ” check parking brake ” and fault lights, but dealer diagnosed as EGR-problem.

    1. Also, the dealer said, i can drive my car, in the meanwhile. Can this affect later on for warranty issues if they see that it has been driven with fault codes on?

      1. Hi Pasi,
        We will look into this and get back to you once we’ve heard from our Warranty team.

    2. Hi Pasi,
      We would recommend having your vehicle repaired as soon as possible. It’s unlikely that EGR failure will cause a problem in the short term. However, if you are encouraged to continue to drive your vehicle with the engine warning light still on, it is possible that further damage may be caused because of it. If determined that the vehicle has been ‘driven on’ then warranty maybe affected.
      The service manual states:
      “In the event of defects requiring warranty work, you are obliged to present your vehicle to an authorised Toyota repairer as soon as possible. This is to prevent defects from escalating and requiring more extensive repair than would originally have been needed.”
      We hope this helps.

      1. Hi I got a new EGR valve fitted and I’m still getting park brake system and management light on. Is there a reset button or anything to press once a new EGR valve has been fitted?

        1. Hi Gary,

          Thanks for getting in touch. The EGR valve needs to carry out a learning function when it is replaced. Dependent on the engine management system, this may take place when the ignition is switched on and left on for a short period, or it may need to be done using a diagnostic tester.

          Given the reported faults, we would recommend for you to take the vehicle into your nearest Toyota Centre for diagnosis.

          Hope this helps.

    3. Hello,

      I have exactly the same problem with model 2017 2.0 D. I have driven only 24 000 km and now my brand new Tojo is broken. This is my 7th and last Tojo. You have catchup the European quality. Nice work!

      My message is that I don’t drive Toyota, because it’s fun to drive or it has great personality. I drive it only, because it’s cheap to run an especially it’s reliable. Now you lost that.

      There is also brighter side on this. Finally I can by a real car. It will have a star in it.

  20. I have today picked up a 6 month old Auris with 5500 miles on the clock. It broke down on the way home with this defective valve issue. What I need to know is at what point is the repair or part defective. For instance, if it goes wrong in another 5000 miles will I pay again? Or should the new component/repair be good(guaranteed) for a given amount
    Of miles?

    1. Hi Kevin,
      We would recommend speaking with your local Toyota Centre about this, they will be able to discuss this in more detail.

        1. Hi Kevin,
          As explained above in the blog post the EGR valve’s location within the direct path of flowing exhaust gases means that soot can accumulate around the EGR valve and block its free movement. It is possible to mitigate this by ensuring the vehicle is regularly driven at sustained speeds above 40mph. Constant use of any vehicle in low-speed, urban environments with frequent stops will accelerate the amount of soot collecting around the EGR valve. As the fault is not due to a manufacturing defect, it will not be covered by warranty. Therefore, a customer would need to pay for this. If you need further clarification on this issue, we would recommend contacting Toyota UK customer relations team.

    2. Hi Kevin unfortunately no luck with Toyota on this mine failed under warranty and it’s always someone else’s fault! They obviously have a problem that they won’t address my last 3 cars have been new Toyotas my next car won’t be

      1. Hi Paul,
        We’re sorry to hear this, unfortunately this is a wear and tear part and therefore not an issue with the manufacturing of the product. Do you have a case with our customer relations team?

        1. What is reasonable wear and tear whilst still under warranty?
          Given up with lack of customer care

          1. Hi Paul,
            The 5 year warranty covers any mechanical fault caused by a manufacturing defect, not natural wear and tear of a vehicle. The location of the EGR valve and DPF is within the direct path of flowing exhaust gases. This means that soot can accumulate around the EGR valve and block its free movement. Therefore, unfortunately not a manufacturing defect and solely a wear and tear issue with the car. We would have to recommend speaking with our customer relations team to discuss this further and we would be happy to pass your details on if this is something you require. Many thanks.

        2. typical response from Toyota ” wear and tear” my ar^e. The EGR is clearly not fit for purpose. Are they suggesting that if you live in or near a city you shouldn’t buy a Toyota as the average speed in London is around 11 mph so how can you expect to achieve 40 mph….If it needs repairing/replacing after 5000 miles then as I said its not fit for purpose and I would love for this to be challenged in the courts. Although mine was replaced under warranty as the car was less than a year old.

          1. Hi Malcolm,
            Thanks for your comment. The purpose of the EGR and DPF filters is to meet emission targets set by the EU to all automotive companies. If you wish to discuss this further, we’d suggest contacting our Customer Relations team. You can find their details here:
            Many thanks.

  21. My Prado has had it’s EGR valve cleaned by sandblasting it and is work fine again. The agent tells me this is a temporary solution but time will tell. The vehicle is used mainly for long trips and only experienced the problem after 150km travel or more.

  22. I have a Toyota landcruiser 200 series can someone tell me where the EGR flow bank 2 is situated in the motor I think someone told me it was down in the valley part of the motor

    1. Hi Barry,
      We’d recommend speaking with a technician in your local Toyota dealer. They will be the best people to advise.

  23. My Toyota Prius (2011) after 60,000 miles got warning sign lit up on the dash. I booked diagnostic at a certified Toyota service, by the time I got there, the sign disappeared.

    I did the diagnostic anyway and was told that EGR (exhaust gas recirculation) valve is failing (more like foiling). The quote for replacing it at Toyota is almost 600 GBP, no other recommendation was given or reasons for the valve failure was explained.

    A few months later the sign came back again, with the same signal – the car is loosing power when idling. EGR works by recirculating a portion of an engine’s exhaust gas back to the engine cylinders. I called to Toyota service again and asked them to book me for the valve replacement, they stated that diagnostic is first (each cost 60 GBP) and only then ordering parts.

    I asked them to replace it and if the warning sign will still be there we think about the diagnostic. They refused.

    Digging into the forums, the EGR clogs up because exhaust gas is not recirculating back into the engine at idle, and generally only happens when the vehicle exceeds 30 mph. Which for city cycle is almost never. Last time the sign disappeared as I was driving 20 miles to the centre on the motorway and helped to clean the valve.

    Replacing the valve every 60,000 miles for 600+ 60 GBP is a bit excess or flaw in design (particularly for hybrid). I talked to the service station, apparently checking EGR is not part of any service, they do not clean them..just making money… Have you experienced this on your Prius and other any alternative solutions?

    1. Hi Peter,
      We’re sorry to hear this. Have you spoken to customer relations about this issue?

      1. Hi Ella,
        Many thanks for your swift reply. Indeed, I did, hence there is post.

        However your attention only partially answers the question.
        Two other parts:
        – Design issue.
        – Checks while servicing the car (20,000 miles, etc..)

        1. Hi Peter,
          Please could we take your case number for this complaint?
          We will feed back all of your comments regarding the design and checks whilst servicing. Unfortunately, we’re unable to comment on whether these will be implemented in the future. All comments regarding design are monitored by specific teams around the company and logged accordingly.

          1. Ella, I am sorry but I do not understand your reply. You writing that everything is taken care of but no material change to this particular issue in any shape of form. While it sounds re-assuring from public relations point of view, I would like to have resolution. Alternatively the case is open. I do not want to publish may case number, as it is the only Toyota Service in 40 miles radius and I need the service in the future.
            You will not be able to drop 600 pounds price for a simple valve, as far as the complaint, I am afraid it will compromise quality of service for me personally in the future. You see I am afraid.

          2. Hi Peter,
            In order for us to move forward with your case and speak to customer relations about your issue we require your case number or email address. We won’t make these details public.
            With regards to other issues you addressed, we pass these comments on to relevant people around the company and then it is out of our hands.

          3. Ella,
            Unfortunately you reply below does not include option for a any response. You will not be able to drop 600 pounds price for a simple valve, as far as the complaint, I am afraid it will compromise quality of service for me personally in the future. I hope you understand.
            I am also would welcome feedback from the design and maintenance team.

    2. Had this on a new Avensis D4D Same story from dealer Solved by using £3 worth of Carburettor Cleaner, removing valve (6 bolts), opening egr (3 bolts) and spraying it clean Also clean the inlet port to exhaust with a strong wire and carb cleaner I do it every service and it is perfect

      1. This is obviously a re occurring problem that Toyota have not dealt with and are loosing customer loyalty over not dealing with this matter properly!

        1. I have a 2016 Toyota Avensis which is less than a year old with the same problem. Toyoto have it at the moment and told me they have never seen this problem in a new car. My car seldom does town driving as I work 40 miles away and the journey is mostly dual carriage way. It went in twice before the problem was identified and my last journey home resulted in 3 stops to try and recover the loss of power. This is my 2nd Avensis and my 2013 model was lovely. Don’t think there is going to be a 3rd. 🙁

          1. I also have a 2016 Avensis, it had 2 EGRs in the first year. I do mega mileage so it’s not caused by round town trips.
            Both times it has been repaired under warranty and I have been given a hire car.

      2. You have been very lucky with your dealership. Mine only suggesting doing diagnostics everytime and replacement. With lack of any meaningful support or advice on how to deal with it either from dealership or Toyota blog, I did some research. I bought cleaning solution and add it into the gas tank. After driving 100 miles, the sign disappeared Exhaust Gas Recovery (EGR) on my Toyota Prius. Such a shame that we appear to be a milking base, rather than part of the family.

  24. My 2010 Prado lights start flashing on any long trip. I took it to the dealer who says the EGR valve need replacing. Is it possible that this can take 5.30 hours labour?

    1. Hi there,
      Our dealers have years of experience and they will be giving an accurate quote for both price and time requirements. We would have to suggest speaking with customer relations if you would like to query this further or keep in touch with your dealer. 🙂

  25. Verso 1.6D June 2016. I was booked in today to have my EGR valve replaced. I have already waited 3 weeks for this and was assured that it would be fitted this time. Having had the car returned today after its 1st service I find that the valve has not been replaced and the dealer says that they do not know when it will come in. I am driving around with the management light on and limp mode part of the time. How long will this be? My car is only 9 months old. At Easter I will be holidaying in the car and need it sorted by then. Toyota GB – When will the EGR valve be available? Will Toyota GB be loaning me a car if this continues much longer?

    1. Hi Matthew,
      Have you reported this issue to our Toyota GB customer service team?

    2. Hi I had the same problem under warranty, dealer useless. The best way to clear it is to take it on a fast road in forth gear and thrash it for a few minutes it seems to blow it through.

      1. Paul, thanks for your advice. If I can get it out of limp home mode long enough I will try that.

  26. Mid-December latest an orange warning lighted up on my dashboard. I was on the highway, and the car dramatically lost speed: dropped from 130kms to 80kms in a few seconds. I left the highway and went with the car to the dealer/garage.
    After examination it went out that the EGR valve was defective and needed to be replaced. According to the dealer, the part was available end of January. In the meantime, as they told me, I was allowed to use my car. I really need it to go to work. It is really not pleasant or reassuring to drive with it. The fan is constantly turning (motor overheated??), the car “swallows” gasoline as if it’s water, the driving not at all efficient (it is almost a tractor when you have to change gear) and the driving is not fluid. It’s really not a pleasure to use it. Now, the worst is coming… the lead time is not end of January anymore, but “unknown”!! Latest news: it can take “several weeks”! As I heard I am not the only one. It seems to be a manufacturing problem. In this area only, almost 400 car owners have the same defect.. I am not at all happy with the Toyota service, because of a problem that is not my fault at all I need to drive this car another XX days.. with a scary hart, because there’s no other solution. If I want a replacement car, it costs 36€ per day, and amount that I cannot afford

          1. Hi Ella, yes of course. As written in my first message. They told me that I could drive with it till the day that this part arrives in the garage. I don’t have another choice then to do so because they ask 3euro pet day for a replacement car and they don’t know how many weeks before that this part arrives. I drive every day to my work with a very scary heart…

          2. Hi Betsy,
            Apologies, we can see that you’ve been to a dealer in Belgium. Due to your location, we would have to suggest contacting Toyota Belgium to see if they can assist. You can find all contact details here: We hope this issue can be resolved via Toyota Belgium’s customer relations team.

          3. @ELLA: Dealer: Toyota City Zaventem. You can find it on the Internet. It’s a very big and important dealer in this area. Not a small garage.

  27. Hi from a sunny South Africa! Just had my EGR valve replaced today in my 2012 Prado VX. Naturally i was was horrified when the engine check lights started flashing while i was some 100km from home. What is the chance of a recurrence of this valve giving up and then damage to the engine if i have to drive for a prolonged distance to the nearest dealer? Is this a fatal flaw in the 2012 VX or are these EGR valves meant to give up and how frequently? I do a lot of urban driving in the Joburg traffic. Thanks!

    1. Hi Ash,
      Thanks for getting in touch and we’re sorry to hear you’re having problems. Unfortunately, we are unable to comment on your vehicle as the repairs were made in South Africa. We would have to advise talking with Toyota South Africa. Many thanks.

  28. wow what is the point of asking question then you will just pass the query to your technical team. in my mind it would be more appropriate providing some possible conditions on why something happened giving a bettet Idea of what the problems may be instead of just passing it, your are just leaving the customer in the same condition when he asked you a question. at least with some may be answer he can ponder upon it then give the statement should you require a more professional help please do come visit our toyota dealer not will pass this on to our tech team wow!!!!!!!!!!

    1. Hi Migiz, thanks for your comment. We always strive to provide the most helpful response to every question left here. It is not always possible for us to fully understand the issue a customer is having with his or her car without seeing it in person, which is why we sometimes recommend taking the car to a local Toyota dealer. All of the feedback left here is taken seriously and does get passed along to our technical team. Thanks.

  29. Hi my 2011 reg avensis is giving out a lot of smoke from the exhaust only when in gear plus the economy on local journeys has gone very low. It’s not giving me any sign on the dash. What can be the problem

  30. If the warning lights are coming on on my RAV4 while under warranty is this a warranty issue or will I be charged for cleaning? Is n’t there an issue with the size of the tube to the valve. My dealer is telling me I get the desiel from supermarkets and I do too many urban miles. The salesman didn’t explain any of this when we bought the car.
    40,000’miles is not high for 3 years motoring what’s reasonable to expect from the dealer and warranty?

    1. Hi Paul,
      Thank you for your post. Our technical team have advised that this would be covered under warranty. If there is a genuine fault with the vehicle then this would be paid for under warranty. Hope this helps clarify. If you have any other questions please let us know.

  31. My check engine light just came on because of the EGR valve. And of course it happened days before a trip from San Antonio to Houston and back. Can my car make it through the weekend? If I need to have the part replaced (and ordered) then I know that can’t happen in two days. Thanks!

    1. Hi from the UK Alexandra. Unfortunately we are not able to diagnose your car over the internet. We suggest getting in touch with your local Toyota dealer so they can have a look. Thanks.

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