VOLVO
ECM-2C2D - Injector cyl 3. Signal too low
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 from the cylinder 3 injector is too low. The signal wire may have been shorted to ground, or the injector may be damaged.
Possible causes
- Signal wire has been shorted to ground
- The injector is damaged
What you can do
- 1Read and note the code, clear it and road test
- 2Inspect the cylinder 3 wiring for chafing, especially where it runs close to the body
- 3Use a multimeter to check that the signal wire to cylinder 3 has no contact with ground (the body)
- 4If you have a diagnostic tool: check that the cylinder 3 injector can be activated, and listen for a click
- 5If the wiring is intact but the fault remains, have a workshop test the valve
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.