VOLVO
ECM-P129211 - Injector High Side Short To GND Or VBATT - Bank 2. General Electrical Failures. Circuit short to ground
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
7 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–), XC60 (2009–)
Show models by year and engine (20)
- Volvo S60 (2011–)2011Engine B4164T, B4164T3, B4204T6, B4204T7 only
- Volvo S60 (2011–)2012–2014Engine B4164T, B4164T2, B4164T3, B4204T7 only
- Volvo S60 (2011–)2015Engine B4164T, B4164T2, B4164T3 only
- Volvo S80 (2007–)2010Engine B4204T6 only
- Volvo S80 (2007–)2011Engine B4164T, B4204T6, B4204T7 only
- Volvo S80 (2007–)2012–2014Engine B4164T, B4164T2, B4204T6, B4204T7 only
- Volvo S80 (2007–)2015Engine B4164T only
- Volvo V40 (2013–)2013Engine B4164T, B4164T3 only
- Volvo V40 (2013–)2014–2015Engine B4164T, B4164T3, B4164T4 only
- Volvo V40 Cross Country (2013–)2013–2015Engine B4164T only
- Volvo V60 (2011–)2011Engine B4164T, B4164T3, B4204T6, B4204T7 only
- Volvo V60 (2011–)2012–2014Engine B4164T, B4164T2, B4164T3, B4204T7 only
- Volvo V60 (2011–)2015Engine B4164T, B4164T2, B4164T3 only
- Volvo V70 (2008–)2010Engine B4204T6 only
- Volvo V70 (2008–)2011Engine B4164T, B4204T6, B4204T7 only
- Volvo V70 (2008–)2012–2014Engine B4164T, B4164T2, B4204T7 only
- Volvo V70 (2008–)2015Engine B4164T, B4164T2 only
- Volvo XC60 (2009–)2010Engine B4204T6 only
- Volvo XC60 (2009–)2011–2012Engine B4204T6, B4204T7 only
- Volvo XC60 (2009–)2013–2015Engine B4204T7 only
What does this fault code mean?
This fault concerns the signal to the cylinder 3 injector, which is too low when the engine control module checks the circuit on the supply side. The engine needs to be running for the fault to be detected. The cause can be a signal wire shorted to earth, or a damaged injector.
Possible causes
- The signal wire is short-circuited to earth
- Damaged injector
What you can do
- 1Check that the fuses are intact. The locations are in the owner's manual or on the fuse box cover.
- 2Go through the connector to the cylinder 3 injector so that it is secure, clean and free from corrosion.
- 3Use a multimeter to check that the wire to the cylinder 3 injector is not shorted to earth (the body). Make the measurement with the ignition off.
- 4With a diagnostic tool you can activate the cylinder 3 injector. Listen for a click and compare with the other cylinders.
- 5If the fault returns, have a workshop with diagnostic equipment check the cylinder 3 injector and its wire.
Symptoms you may notice4
- The Check engine (malfunction) lamp comes on or behaves abnormally
- Poor performance, the car lacks power
- The engine hesitates, surges or runs unevenly, at unclear times
- Unusual noise while driving
General guidance for car owners. Diagnosis on the car can point to a different cause.