Volkswagen Passat 2.0 TDI ECU fault

Volkswagen Passat engine ECU fault

Common failing ECU for 2008 - 2015 VW Passat 2.0 TDI


This Volkswagen Passat 2.0 TDI engine ECU is a very common failure that will cause the engine to cut out whilst driving or fail to start completely. The fault may sometimes occur intermittently and allow the engine to restart for a short period however, ECU failure will normally cause complete none starting of the engine. For the Passat built between 2011 – 2015 it is common for the ECU to be water damaged due to poor drainage from the plenum chamber under the windscreen. We can test and repair this Passat ECU or supply replacement ECU's from stock when available.


Diagnosing the ECU fault:

If you are trying to read fault codes using diagnostic equipment you may notice your diagnostic equipment will not communicate with the engine system, you may also have fault codes stored in other systems on the vehicle such as the ABS system or the instrument cluster that complain of loss of communication with the engine ECU, this is usually a good indication that this ECU has potentially failed.


Location and removal of the ECU:

This ECU is located inside the drain channel under the windscreen, you will need to remove the plastic drain cover to gain access to the ECU, removal of the wiper arms may also be necessary to remove the plastic drain covers.


Shop Now


Common Failure symptoms:

  • Cutting out while driving
  • Complete non-start
  • No communication to engine ECU


Affected Vehicles:

  • Volkswagen Passat (B6 & B7) 2009 - 2015


Common failing part numbers:

(We cover a huge range of part numbers so if you do not see your part number here then please see our full range of Passat engine ECUs)


Test and rebuild:

Each Volkswagen Passat engine ECU is fully tested on our HIL rigs under real-world both before and after the rebuild. During the rebuild we only use higher rated than standard components to ensure that, once rebuilt, this engine ECU will outlast the vehicle it is fitted back onto.



This engine ECU is coded to the vehicle, however during rebuild of your own unit all coding is retained. Meaning that once you have the ECU back it is a simple case of plug and play.



We rebuild and supply this type of VW Passat ECU for Volkswagen 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?

Pay for the rebuild here: Get yours rebuilt

Print the payment/booking confirmation email.

Package the Volkswagen Passat 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 Volkswagen Passat 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 unit 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 Passat engine ECU and return it to you with an unlimited mileage warranty.

If you require further information regarding this Volkswagen Passat engine ECU, then please contact us.

Volkswagen Products/Services
































Comments on "Volkswagen Passat 2.0 TDI ECU fault"
Aaron Wilcox says: 26/12/2023 21:12:58
Hello, I have a 2012 VW CC Sport 2.0T. Experienced EPC light & check engine light flashing. Reduced power, hesitates on acceleration. I found 01314 code - ECU No Communication- stored in ABS. I have been troubleshooting misfires. New spark plugs, ignition coils, & fuel injectors & Intake Manifold Gasket.
ECU Admin says: 27/12/2023 12:49:18
Hi Aaron, please email us your part number and we can look into what we can help you with . contact us
John woods says: 26/11/2022 18:53:29
Hi I have a vw Passat 2.0 tdi 16 valve cr the car wont start I checked live data .theres no synchronisation between ecu and engine is this a problem that can be repaired
ECU Admin says: 28/11/2022 09:47:55
Hi John, email us over your part number and diagnostic results to contact us and we can look into that for you.
Kelly says: 15/05/2021 23:20:32
If i send it to you from wi how long will it take to get back
ECU Admin says: 17/05/2021 10:43:57
Hi Kelly, our current turn around time is 2-3 working days
Adam says: 09/05/2020 00:02:42
Hi,what is the charge if I wanted to send my ecu for testing?
ECU Admin says: 11/05/2020 09:58:37
Hi Adam, for prices and shipping information please select your ECU from the following list:
Raymond Coffey says: 10/10/2019 21:25:05
Hi I have a 2l vw tiguan with ecu problems the same as you describe stopping and not starting it is water damaged
ECU Admin says: 11/10/2019 09:48:07
Hi Raymond, we also offer test and rebuild on Tiguan ECU’s for prices and shipping information please select your part number from the following list:
Leave a Comment All fields are required*