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Engine Control Units (ECUs) – Car Engine Computers

Blog about ECU Engine Controllers and Automotive Electronics
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AdBlue Fault or SCR Problem – NOx Errors, No-Start Countdown & Solutions

ECU Diagnostics and Repair 19-08-2026

AdBlue, SCR or NOx Problem?

Is your vehicle counting down the remaining miles or kilometres until the engine can no longer be restarted, showing an AdBlue warning after refill, or reporting a NOx sensor fault?

In our guide, we explain the most common AdBlue problems, typical SCR and NOx faults, supported ECU types and available service options for vehicles such as Fiat Ducato, Peugeot Boxer, Citroën Jumper / Relay, Iveco Daily, VW T6, BMW and many others.

You can also find out how AdBlue OFF at our workshop, sending your own ECU to us, or purchasing a prepared replacement ECU works.

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EcuSale 0
BMW ECU Contaminated with Diesel Fuel? 2.0 Diesel ECU Repair

ECU Diagnostics and Repair 02-08-2026
BMW 2.0 Diesel ECU Contaminated with Fuel – What Should You Do?

Starting problems, no communication with the ECU or diesel fuel visible inside its connector may indicate an electronic fault in the BMW engine control unit.

In this guide, we explain:
- why diesel fuel can enter the engine ECU,
- the most common symptoms and fault codes,
- which components should be checked or replaced before refitting a repaired ECU,
- how ECU repair, cloning and programming are carried out,
- the differences between ECUs for vehicles with and without AdBlue,
- which tested BMW engine ECUs are available for sale.
Read the full guide to learn how to prevent a repaired or replacement ECU from being contaminated and damaged again.
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ECUSale - Technical Team 0

Automotive Electronics Manufacturers

ECU Engine Controllers, ABS Pumps, BCM Modules and automotive electronics.

1. Are the products tested before shipping?

Yes, every ECU engine controller, BSI module, BCM module, ABS module, transmission control unit, and other automotive electronic module is electronically tested before shipment. Each unit is checked for proper communication and correct operation to ensure you receive a fully tested product ready for installation.

2. Does the ECU engine controller require programming or coding after installation?

Whether programming or coding is required depends on the version of the product. We offer VIRGIN, IMMO OFF, and Plug & Play ECU engine controllers. Information about any required programming or coding is always clearly stated in the product description. In many cases, the unit can be installed and used without any additional coding or adaptation.

3. How do I choose the correct part for my vehicle?

The most important step is to compare the part numbers found on your original unit. Pay special attention to the Bosch, Siemens, Magneti Marelli, Continental, or vehicle manufacturer's OEM part number. If you are unsure, simply send us a photo of your existing module or provide your vehicle's VIN, and our specialists will help you identify the correct part.

4. Are the products covered by a warranty?

Yes, all ECU engine controllers, ABS modules, BCM modules, BSI modules, transmission control units, and other automotive electronic modules offered in our store are covered by a warranty. Every product is carefully tested and prepared before shipment. If you experience any issues, our technical support team is available to assist with diagnostics and help resolve the problem quickly and efficiently.

5. What payment methods are available in the store?

We offer secure online payments processed through Stripe and PayPal. Customers can pay using a credit or debit card, Apple Pay, Google Pay, Klarna, online banking payments, or a traditional bank transfer. After placing an order, you will receive a secure payment link to complete your purchase safely and conveniently.

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Engine Control Units (ECUs) – Car Engine Computers

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0261S05979 8K2907115AD IMMO OFF ECU ENGINE CONTROLLER AUDI A4 S4 2.0 TFSI

0261S05963 9667054480 IMMO OFF ECU ENGINE CONTROLLER PEUGEOT CITROEN 1.4 1.6 MEV17.4

0261S05812 03C906027BA ECU engine control unit VW IMMO OFF Plug & Play

0261S05808 03C906016AJ IMMO OFF ECU ENGINE CONTROLLER VW GOLF V

0261S05626 9666934280 IMMO OFF ECU Engine Controller Citroën Peugeot 1.6 VTi Plug & Play

0261S05604 39110-2B662 ECU ENGINE CONTROLLER KIA CEED 1.6 16V IMMO OFF

0261S05590 03C906016T IMMO OFF ECU ENGINE CONTROLLER AUDI A3 S3

0261S05190 9666382080 IMMO OFF ECU Engine controller Bosch MEV17.4 Peugeot Citroen 1.4 1.6 VTI

0261S05139 8K2907115AA IMMO OFF ECU ENGINE CONTROLLER AUDI A4 S4 2.0 TFSI

0261S04690 9666104280 IMMO OFF ECU ENGINE CONTROLLER PEUGEOT CITROEN 1.4 1.6 MEV17.4

0261S04616 9666325380 IMMO OFF ECU ENGINE CONTROLLER PEUGEOT CITROEN 1.6 MED17.4

0261S04535 G4 33920-55L10 IMMO OFF ECU ENGINE CONTROLLER SUZUKI SX4 1.6 055L1 3392055L10

0261S04442 7587548 ECU ENGINE CONTROLLER MINI COOPER S 1.6 1.4 DME7587548

0261S04418 8K2907115N IMMO OFF ECU ENGINE CONTROLLER AUDI A4 S4 2.0 TFSI

0261S04417 8K2907115M IMMO OFF ECU ENGINE CONTROLLER AUDI A4 S4 2.0 TFSI

0261S04399 03C906022AL IMMO OFF ECU Engine controller VW AUDI SEAT

0261S04377 8P0907115AH IMMO OFF ECU ENGINE CONTROLLER AUDI A3 S3

0261S04348 03C906027G IMMO OFF ECU ENGINE CONTROLLER VW GOLF VI

0261S04163 7584113 ECU ENGINE CONTROLLER MINI COOPER S 1.6 1.4 DME758411301

0261S04158 7641003 ECU ENGINE CONTROLLER MINI COOPER S 1.6 1.4 DME7641003

Ecu Controller SID208

Ecu Controller Audi Q7

Ecu Controller 1.3 CDTI Corsa

Ecu Controller Ford DCM3.5

Blog about ECU Engine Controllers and Automotive Electronics Go to the Blog

AdBlue Fault or SCR Problem – NOx Errors, No-Start Countdown & Solutions

AdBlue, SCR or NOx Problem?

BMW ECU Contaminated with Diesel Fuel? 2.0 Diesel ECU Repair

BMW 2.0 Diesel ECU Contaminated with Fuel – What Should You Do?