VOLVO
ECM-P120512 - Cylinder #5 Injector Circuit Open/Shorted. General Electrical Failures. Circuit short to battery
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
5 modelsS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–), XC90 (2003–)
Show models by year and engine (6)
- Volvo S80 (2007–)2007–2009Engine D5244T4, D5244T5 only
- Volvo V70 (2008–)2008–2009Engine D5244T4, D5244T5 only
- Volvo XC60 (2009–)2009All engines except: B6304T2
- Volvo XC70 (2008–)2008All engines except: B6324S
- Volvo XC70 (2008–)2009Engine D5244T4, D5244T5 only
- Volvo XC90 (2003–)2013–2014Engine D5244T18, D5244T5 only
What does this fault code mean?
The code for cylinder 5 is set when the signal to the injector is faulty, because the signal wire is shorted to supply voltage. The wiring between the engine control module and the injector is therefore the first thing to check.
Possible causes
- Signal wire shorted to supply voltage
- Damaged injector
What you can do
- 1Read and note the code, clear it and road test to see whether it returns
- 2With the engine control module connector disconnected, use a multimeter to check that the signal wire to cylinder 5 has no contact with battery positive
- 3Look at the wire to cylinder 5 for chafing and pinching
- 4Check the injector for cylinder 5 for damage
- 5If you find no fault: have a workshop check the injector
Symptoms you may notice1
- The engine does not start, either occasionally or all the time
What the fault can affect1
- Injection stops
General guidance for car owners. Diagnosis on the car can point to a different cause.