Peugeot 207 ECU - common anti pollution fault

Peugeot 207 anti pollution fault

This Peugeot 207 ECU is a very common failing unit that affects vehicles built between 2007 and 2015 with the standard 1.4 and 1.6 litre engines and also the higher powered VTi and GT CC versions.

We see a lot of these 207 ECUs failing, causing the 'anti pollution fault' message to be displayed, failure of the coolant temperature sensor/gauge, with a constant overheat warning light on the dashboard, this will also cause the coolant fan to run constantly and may cause engine idling problems, also fault codes stored for the thermostat heater control.


Another common symptom of ECU failure is MOT emissions failure caused by a non-functioning lambda sensor circuit, if this occurs then you will likely have fault codes stored for the oxygen 02 sensor. We have also seen failure of this ECU to cause engine misfires and sporadic fault codes for various engine sensors.


Common Failure symptoms:

  • Anti pollution warning message
  • Overheat light
  • Idle speed fault
  • Cooling fan constantly running
  • Misfire


Common fault codes:

  • P0599 – Thermostat Heater Control Circuit – Short Circuit To Positive
  • P0135 – Oxygen Sensor Heater Malfunction – (Bank1, Sensor 1)
  • P0031 – Oxygen Sensor Heater Control Circuit Low – (Bank 1, Sensor 1)
  • P0141 – Oxygen Sensor Heater Circuit Malfunction – (Bank 1, Sensor 2)
  • P0958 – Controlled Thermostat Control – Short Circuit To Earth
  • P0037 – Oxygen O2 Sensor Heater Control Circuit Low – (Bank 1, Sensor 1)
  • P2237 – Oxygen Sensor Positive Current Control Circuit
  • P0014 – Exhaust Camshaft Dephasing Fault Coherence


Affected Vehicles:

  • Peugeot 207 (2007-2015)


(the above numbers are just a small list of common failing part numbers, if you do not see your part number then please see our full list here)


Test and rebuild:

We test these Peugeot 207 engine ECUs on our purpose built Hardware In-the-Loop test rigs. By running the ECU under real-world load and driving conditions we can ensure that, once rebuilt, the engine ECU will out perform OEM specifications.



When we rebuild your own unit, we retain all the original programming and coding so there is no need for an expensive trip to the main dealer afterwards, it is just a case of plugging it back in and away you go.



We rebuild these Peugeot 207 ECUs for main dealers and specialists all over the globe so you can be assured of our very high standard of work



Lifetime unlimited mileage*


How do I get my unit rebuilt?

To pay for the rebuild select your part number and click: Get yours rebuilt

Print the payment/booking confirmation email.

Package the Peugeot 207 engine ECU inside a sturdy box with plenty of packaging material (make sure you include your confirmation email in the box).

Send us your package by tracked courier (the shipping instructions are on the confirmation email).

Once received we will test, rebuild and return your engine ECU with an unlimited mileage lifetime warranty. (if your unit turns out not to be faulty then we will refund your payment less a small testing fee and return shipping)


What if I don’t want to pay up front?

This is not a problem, if you prefer this option then follow the following steps:

Fill in and submit this test form.

Print the booking confirmation email.

Package the Peugeot 207 engine ECU inside a sturdy box with plenty of packaging material (make sure you include your confirmation email in the box).

Send us your package by tracked courier (the shipping instructions are on the confirmation email).

Once received, we will test your engine ECU and call you to advise on the outcome of testing, if your ECU is faulty and you choose to go ahead with the rebuild then we will take payment over the phone using a debit/credit card.

We will then rebuild your engine ECU and return it to you with an unlimited mileage warranty.

If you require further information regarding this Peugeot 207 engine ECU, then please contact us.

Peugeot Products/Services







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Comments on "Peugeot 207 ECU - common anti pollution fault"
Keith Callistan says: 30/10/2020 1:44:18 PM
How do I find part number for 207 vti120 auto year 2008
ECU Admin says: 3/11/2020 9:36:30 AM
Hi Keith, the part number will be written on your existing ECU
christopher woodward says: 10/4/2020 2:55:41 PM
Got a Peugeot 207 /2010 Keeps saying anti pollution faulty and sounds like it keeps mis firing had new plugs but just dont seem right
ECU Admin says: 15/4/2020 11:30:33 AM
Hi Christopher, looks like you may have a faulty engine ECU. We can offer a comprehensive test with a view to rebuild if faulty. To get started click your part number above or complete our test form here:
David says: 23/1/2020 4:42:57 PM
Hi I have an issue where I keep getting the anti pollution fault on my 207 GTi 175bhp model my spark plug has been killed due to the fault replaced was running fine but a week later "when cold" minus temperatures message pop up and idle is missing really bad any help would be great thanks
ECU Admin says: 29/1/2020 10:50:11 AM
Hi David, we would recommend checking the stored fault codes in the engine management ECU against those on our list above. You can then find pricing information for ECU rebuild by matching your part number here:
Andrew Smith says: 31/12/2019 1:12:20 PM
I have a Peugeot 207 sport auto with fault codes P1035, P0031, with air pollution warning message. is this most likely to be the ECU ? Where do I find the ECU and is the part number generally visible without removing it.
ECU Admin says: 2/1/2020 2:11:41 PM
Hi Andrew, from the fault code you have stored it appears you may have a faulty engine ECU. This ECU is located in the engine bay near the battery.
Mohammed says: 25/11/2019 1:56:11 AM
Hi how much Peugeot 207 anti pollution fault 1,6. 2007
ECU Admin says: 25/11/2019 12:17:18 PM
Hi Mohammed, for prices and shipping information please select your part number above or from the following list:
Chad moorcroft says: 25/8/2019 6:39:13 PM
If I got my ecu rebuilt how long does it take
ECU Admin says: 27/8/2019 10:38:52 AM
Hi Chad, our ECU rebuild service takes 1-2 working days
benario yusi says: 6/8/2019 5:54:38 PM
how would i know which part should i buy from so many list you mention
ECU Admin says: 7/8/2019 9:30:58 AM
Hi Benario, just match the part number from your existing ECU to the correct one on this page. If you cannot find it here then please see our full Peugeot 207 engine management ECU catalogue:
D Windsor says: 2/8/2019 4:28:07 PM
How much to check and repair ,many thanks Dave.
ECU Admin says: 2/8/2019 4:43:28 PM
Hi Dave, please select your part number from the list for further information of shipping and cost.
Max says: 30/7/2019 9:17:13 PM
How much to rebuild Ecu 2008 Peugeot 207 1.4 petrol sport It has anti pollution fault The idle is terrible
ECU Admin says: 31/7/2019 10:00:16 AM
Hi Max, just select your part number above for pricing and shipping information. If your part number isn’t listed then please see the following link:
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