VOLVO
ECM-2C1C - Injector cyl 2. 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 injector for cylinder 2 has a signal that is too high. The fault may be caused by the signal wire being shorted to supply voltage, or by the injector itself being damaged.
Possible causes
- The injector for cylinder 2 is damaged
- The signal wire to cylinder 2 has been shorted to supply voltage
What you can do
- 1Clear the code and road test to see whether it returns
- 2Look for chafed wiring to the injector for cylinder 2, especially where it could have touched a live source
- 3Use a multimeter to check that the wire to the injector for cylinder 2 is not shorted to supply voltage
- 4If you have a diagnostic tool: check in live data whether the signal from the cylinder 2 injector clearly differs from the other cylinders
- 5If the wire is undamaged, have a workshop check the 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.