VOLVO
ECM-P060B29 - Internal Control Module A/D Processing Performance. General Signal Failures. Signal invalid
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 ECM watches the current to the fuel flow control valve, measured by an internal A/D converter. The code is set when the signal from the control valve is invalid, meaning it cannot be used, and it applies with the engine running.
Possible causes
- The control valve may be sticking, and there may be water or dirt in the fuel system
- If ECM-P060B22 is also stored: signal wire shorted to voltage or a damaged fuel flow control valve
- If ECM-P060B21 is also stored: signal wire shorted to earth
What you can do
- 1Read the code with the engine running and note whether it is active right now
- 2If you have a multimeter: check that the signal wire to the fuel flow control valve is not shorted to earth or voltage
- 3Check that the connectors at the control valve and the ECM are tight and clean
- 4If the valve is sticking, have a workshop check the fuel system and replace the control valve
Symptoms you may notice1
- No noticeable symptoms for the driver
General guidance for car owners. Diagnosis on the car can point to a different cause.