VOLVO
ECM-2311 - Injector 1. Faulty power supply
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
5 modelsS60 (2001–2009), S80 (1999–2006), V70 (2000–2008), V70 XC / XC70 (2001–2007), XC90 (2003–)
Show models by year and engine (10)
- Volvo S60 (2001–2009)2001Engine D5244T only
- Volvo S60 (2001–2009)2002–2003, 2006Engine D5244T, D5244T2 only
- Volvo S60 (2001–2009)2004–2005Engine D5244T, D5244T2, D5244T3 only
- Volvo S80 (1999–2006)2001Engine D5244T only
- Volvo S80 (1999–2006)2002–2006Engine D5244T, D5244T2 only
- Volvo V70 (2000–2008)2001Engine D5244T only
- Volvo V70 (2000–2008)2002–2003, 2006Engine D5244T, D5244T2 only
- Volvo V70 (2000–2008)2004–2005Engine D5244T, D5244T2, D5244T3 only
- Volvo V70 XC / XC70 (2001–2007)2003–2006Engine D5244T only
- Volvo XC90 (2003–)2003–2006Engine D5244T only
What does this fault code mean?
The engine control module (ECM) drives injector 1 through its own power stage, and the voltage levels in that circuit are above battery voltage. The code is set when the module detects a fault on the wiring to the injector while the engine runs. The cause may be in the battery and power supply, but also in the injector or the control module.
Possible causes
- Loose or oxidised battery connections
- Problem with the power feed to the engine control module (ECM)
- Defective charging system
- Open circuit or short-circuit in the signal or ground wire to the injector
- Defective injector
- Defective engine control module (ECM)
What you can do
- 1Check the battery terminals: they should be tight, clean and free from oxidation
- 2Use a multimeter to see whether the battery and charging keep their voltage when the engine is started and when it runs
- 3Check that the connectors to the engine control module are secure and have no play or oxidation
- 4If you have a diagnostic tool: read the voltage in live data while the engine runs and see whether it stays steady
- 5If the fault remains, have a workshop decide whether the injector or the engine control module is defective
Symptoms you may notice2
- Engine fails to start
- Engine not firing on all cylinders
General guidance for car owners. Diagnosis on the car can point to a different cause.