VOLVO
ECM-2C5C - Injector cyl 6. Signal too high
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
2 modelsS80 (1999–2006), XC90 (2003–)
Show models by year and engine (2)
What does this fault code mean?
The signal to the injector for cylinder 6 is too high. It may come from a short to supply voltage in the signal wire or from a damaged injector.
Possible causes
- Signal wire short-circuited to supply voltage
- Damaged injector
What you can do
- 1Read and note the code, clear it and road test
- 2Look for chafing or pinching on the cylinder 6 wire, as it may have touched a live source
- 3With ignition on, use a multimeter to check that the cylinder 6 signal wire is not shorted to supply voltage
- 4If you have a diagnostic tool: with ignition on, compare the cylinder 6 signal with the other cylinders in live data
- 5If the wire is undamaged but the fault remains, have a workshop test the cylinder 6 injector
Symptoms you may notice2
- The malfunction indicator lamp (MIL) is on
- The engine is not running on all cylinders
General guidance for car owners. Diagnosis on the car can point to a different cause.