VOLVO
ECM-P12611E - Cylinder #1 High To Low Side Short. General Electrical Failures. Circuit resistance out of range
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?
Even though the code is named as a short between the high and low side, it applies to the current signal to the cylinder 1 injector, which is too low compared with the requested current. It can be caused by contact resistance or oxidation in the connections, or by a damaged engine control module.
Possible causes
- Contact resistance or oxidation in the connections to the injector
- Damaged engine control module (ECM)
What you can do
- 1Check that the connector to the cylinder 1 injector is secure and that the contact faces are free from oxide and corrosion.
- 2Check that the fuses are intact. The locations are in the owner's manual or on the fuse box cover.
- 3Have a workshop measure the internal resistance of the injector with diagnostic equipment, so that a damaged injector can be ruled out.
- 4If the injector and connectors are in order, the engine control module (ECM) may be the fault. A workshop then replaces it.
- 5After the work: clear the code and check that it does not return with the engine running.
Symptoms you may notice3
- The Check engine (malfunction) lamp comes on or behaves abnormally
- The engine does not start
- The engine is hard to start and cranks slowly
General guidance for car owners. Diagnosis on the car can point to a different cause.