VOLVO
ECM-1134 - Engine control module. Signal faulty. Intermittent fault
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
2 modelsS40 (1996–2004), V40 (1996–2004)
Show models by year and engine (2)
What does this fault code mean?
The engine control module has at an earlier point registered an internal fault in itself, but the fault is no longer present. The fault is intermittent and concerns the control module itself, not a sensor or wiring outside it.
Possible causes
- Defective engine control module
- Temporary internal fault in the engine control module
What you can do
- 1Clear the code and check whether it returns
- 2Check the state of the battery, since weak voltage can cause false internal faults
- 3If the fault returns, have a workshop check the engine control module or replace it
Symptoms you may notice2
- The malfunction indicator lamp comes on
- The engine does not start
General guidance for car owners. Diagnosis on the car can point to a different cause.