VOLVO
ECM-P120200 - Cylinder #2 Injector Circuit Open/Shorted. General Failure Information. No sub type information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
2 modelsS80 (2007–), V70 (2008–)
Show models by year and engine (2)
What does this fault code mean?
The engine control module (ECM) follows the injection timing and the output stages for the injectors. The fourth digit of the code shows which of cylinders 1 to 4 it refers to, and the code is set when the injection timing is wrong.
Possible causes
- Contact resistance or oxidation in the connections
- Open circuit in the wiring
- Short circuit to supply voltage
- Damaged injector
What you can do
- 1Read the code and note which cylinder the fourth digit refers to
- 2Look at the injector connector to see that it is firmly seated and clean
- 3Use a multimeter to check that the wire to the injector is not broken and is not shorted to battery positive
- 4If you have a diagnostic tool: activate the injector for the cylinder concerned and check that it operates
- 5If you find no fault: have a workshop check the injector
Symptoms you may notice2
- Poor performance and lack of power while driving
- Text message and warning symbol in the display
What the fault can affect2
- Engine speed is limited
- The car goes into limp-home mode
General guidance for car owners. Diagnosis on the car can point to a different cause.