VOLVO
ECM-P138B17 - Glow Plug Control Module System Voltage. General Electrical Failures. Circuit voltage above threshold
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
8 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (8)
- Volvo S60 (2011–)2014–2015Engine D4204T5 only
- Volvo S80 (2007–)2014–2015Engine D4204T5 only
- Volvo V40 (2013–)2015Engine D4204T14 only
- Volvo V40 Cross Country (2013–)2015Engine D4204T14 only
- Volvo V60 (2011–)2014–2015Engine D4204T5 only
- Volvo V70 (2008–)2014–2015Engine D4204T5 only
- Volvo XC60 (2009–)2014–2015Engine D4204T5 only
- Volvo XC70 (2008–)2014–2015Engine D4204T5 only
What does this fault code mean?
The code concerns the earthing of the glow control module, which should be earthed both through the control module chassis and through a separate earth point. The engine control module (ECM) sets the code when it detects a fault in this earthing. The causes can be a damaged fuse, poor contact or oxidation in the connector, or an open circuit in the signal wire.
Possible causes
- Damaged fuse
- Contact resistance or oxidation in the connector
- Open circuit in the signal wire
- Damaged glow plug relay
What you can do
- 1Check that the fuse for the glow control module is in place and intact.
- 2Look at the two earths of the glow control module and check that they are tight and not corroded.
- 3Check the connector to the glow control module so that it is secure and clean.
- 4Look for broken or chafed wires in the signal wire.
- 5Have a workshop check the glow plug relay, since a damaged relay can cause the same fault.
Symptoms you may notice1
- The engine is hard to start and cranks slowly, especially on a cold start
What the fault can affect1
- Glow plug operation is limited
General guidance for car owners. Diagnosis on the car can point to a different cause.