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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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A1645401801 28140764 rear SAM module Mercedes ML W164 GL X164 Delphi

A1645409562 A1645451216 A1644422700 Control Unit Module SAM Mercedes ML W164

A2709000600 0261S06038 ECU Engine controller Mercedes MED17.7.2 W176 / W246 CLA GLA

A2709002100 0261S09816 ECU Engine controller Mercedes MED17.7.2 W176 CLA GLA W246

A2721533291 0261209220 VIRGIN ECU ENGINE CONTROLLER MERCEDES ME9.7

A2721533391 0261209218 VIRGIN ECU Engine controller MERCEDES ME9.7

A2721534379 0261209049 VIRGIN ECU ENGINE CONTROLLER MERCEDES ME9.7

A2731530991 0261209377 VIRGIN ECU ENGINE CONTROLLER MERCEDES GL 450 ME9.7

A2731535179 0261209208 VIRGIN ECU ENGINE CONTROLLER MERCEDES SL R230 ME9.7

A2769001600 0261S06497 ECU Engine controller VIRGIN Mercedes W212 W207 3.5 V6

A2769005000 0261S07801 ECU Engine controller VIRGIN Mercedes W204 3.5 V6 MED17.7.1

A2769007300 0261S08565 VIRGIN ECU ENGINE CONTROLLER MERCEDES

A6409003700 0281017236 VIRGIN ECU engine controller Mercedes B-Class W245 B200 2.0 CDI

A6421500177 0281013769 VIRGIN ECU ENGINE CONTROLLER MERCEDES 3.0 CDI CR4.12

A6421500872 0281014341 Mercedes 3.0 CDI Virgin ECU Engine Controller Bosch CR4.20

A6421500972 0281014342 VIRGIN ECU ENGINE CONTROLLER MERCEDES 3.0 CDI CR4.20

A6421501272 0281014204 VIRGIN ECU Engine controller MERCEDES 3.0 CDI CR4.30

A6421501477 0281014180 VIRGIN ECU ENGINE CONTROLLER MERCEDES 3.0 CDI CR4.30

A6421501477 0281015927 VIRGIN ECU ENGINE CONTROLLER MERCEDES 3.0 CDI CR4.20

A6421501500 0281015304 VIRGIN ECU ENGINE CONTROLLER MERCEDES 3.0 CDI CR4.20

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?