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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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0261S06551 03C906016CG IMMO OFF ECU ENGINE CONTROLLER AUDI A1 1.4 TSI

0261S06557 03C906027CF IMMO OFF ECU ENGINE CONTROLLER AUDI A1

0261S06621 Plug & Play ECU ENGINE CONTROLLER Peugeot Citroën 9676643580 MED17.4.2

0261S06719 03C906027CT IMMO OFF ECU ENGINE CONTROLLER VW GOLF VI

0261S07005 03C906027BE IMMO OFF ECU ENGINE CONTROLLER Volkswagen Tiguan Jetta 1.4 TSI / 1.6 TSI

0261S07201 03C906016BT IMMO OFF ECU ENGINE CONTROLLER VW JETTA

0261S07731 03C907309M IMMO OFF ECU ENGINE CONTROLLER VW PASSAT 1.4

0261S07732 03C907309Q IMMO OFF ECU ENGINE CONTROLLER VW Tiguan 1.4 MED17.5.5

0261S08055 03C906026AB ECU Engine controller VW Audi Seat – IMMO OFF Plug & Play

0261S1003T 989471601 ECU ENGINE CONTROLLER BMW Z4 9894716 030560060

0261S18584 H1FA12A650FB ECU ENGINE CONTROLLER FORD FOCUS FV6A12B684BCA H1FA-12A650-FB

0261S19085 8699957 ECU ENGINE CONTROLLER BMW 2 F45 8699957-01 170910356

0261S19721 670104910C ECU engine controller Maserati Levante 3.0 670104910

0281001537 500332361 ECU Engine controller Iveco Daily 2.8 2000-2006 IMMO OFF Plug&Play

0281010078 074906018N ECU Engine Controller VW T4 LT 2.5 Immo Off Plug & Play

0281010079 074906018D IMMO OFF ECU ENGINE CONTROLLER VW T4 LT 2.5

0281010082 074906018C IMMO OFF Plug & Play Ecu Engine controller VW T4 2.5

0281010084 074906018B IMMO OFF ECU ENGINE CONTROLLER VW T4 LT 2.5

0281010253 4898111 ECU ENGINE CONTROLLER IVECO EUROCARGO TECTOR

0281010300 DDE 7788053 NNN100720 ECU engine control unit Land Rover Freelander 2.0 TD4 IMMO OFF

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?