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ECU Diagnostics and Repair

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

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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BMW ECU Contaminated with Diesel Fuel? 2.0 Diesel ECU Repair

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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Renault 3.0 dCi ECU 0281013806 Water Damage – Common Symptoms, Causes and Replacement Options

Water-Damaged Bosch ECU 0281013806 / 8200689519 – What Should You Check?

Water ingress is a common cause of failure in the Bosch engine ECU 0281013806 / 8200689519 fitted to selected Renault Master, Renault Mascott, Opel Movano and Nissan Interstar 3.0 dCi or 3.0 CDTI models. This guide explains how moisture can enter the engine control unit, which warning signs may indicate ECU damage and what should be inspected before installing a replacement module.

We also look at the benefits of a new Plug & Play ECU that is supplied ready for installation without complex vehicle programming. You will also learn how an ECU performance upgrade delivering approximately 15% more power can improve torque response and everyday drivability in a commercial vehicle. Read the guide to identify the fault more accurately, reduce the risk of further water damage and choose the correct replacement ECU for your vehicle.

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SID208 2.2 HDi – Repair or Replacement? A Guide for Jumper and Boxer Owners

SID208 2.2 HDi – Repair or Replace the Engine ECU?

A faulty Continental SID208 engine ECU can cause a complete no-start condition, loss of diagnostic communication, CAN faults, engine limp mode or intermittent stalling. In our guide, we explain the most common causes of SID208 failure in Peugeot Boxer and Citroën Jumper 2.2 HDi vehicles and why the power supply, grounds, wiring, BSI module and immobiliser system should be carefully checked before replacing the ECU.

You will also learn when the original engine control unit can be safely repaired and when a tested VIRGIN Plug & Play replacement is the better solution. We show how SID208 ECUs are prepared and tested, how to select the correct part number and what should be checked before the first installation to prevent the replacement ECU from being damaged again.

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