Symptoms of a Faulty Engine Control Unit – How to Recognize ECU Failure?
Engine control unit issues are often mistaken for other faults. No start, loss of communication with the ECU, limp mode or reduced engine power can all seem like ECU failure, but in many cases the real cause lies elsewhere – such as electrical wiring problems, injector faults or power supply issues.
How to Check if Your ECU is Faulty and What to Do Next
The key is to determine whether the ECU is actually the source of the problem or just reacting to another issue. In this guide, we explain what to look for, the most common causes of ECU failure and when repair is a viable option versus replacing the unit. We also cover the differences between VIRGIN and IMMO OFF solutions and when each approach makes sense.
