VOLVO
ECM-183A - Injector driver. Faulty signal
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 ECM tests whether the fuel injectors shut off properly when the engine stops. During shut-down the engine speed should fall as expected. If the ECM registers a faulty signal from the injector output stage, the code is set. A leak in the fuel system is one possible cause, but a defective pressure control valve, relief valve, injector or fuel pressure sensor can also set it.
Possible causes
- Leakage in the fuel system
- Defective fuel pressure control valve
- Defective relief valve
- Defective injector
- Defective fuel pressure sensor
What you can do
- 1Read and clear the fault code, road test and check whether it returns
- 2Look for leaks in the fuel system, such as cracks and damage to the pipes, connections and relief valve
- 3If you have a diagnostic tool, activate one injector at a time and listen for it working
- 4Check the connectors at the fuel pressure sensor and the injectors for play and corrosion
- 5Have a workshop with diagnostic equipment check the fuel pressure and the pressure control if the fault remains
Symptoms you may notice1
- No noticeable symptoms for the driver
General guidance for car owners. Diagnosis on the car can point to a different cause.