VOLVO
ECM-P069821 - Sensor Reference Voltage C Circuit Low. General Signal Failures. Signal too low
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 (8)
- Volvo S80 (2007–)2007–2009Engine D5244T4, D5244T5 only
- Volvo S80 (2007–)2010–2011Engine D4164T only
- Volvo V70 (2008–)2008–2009Engine D5244T4, D5244T5 only
- Volvo V70 (2008–)2010–2011Engine D4164T 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 control module monitors the supply voltage to some of the engine's sensors. The code is set if that voltage is too low or too high. Fault-tracing is carried out according to the other fault codes for the fuel system.
Possible causes
- Fault-trace according to the other fault codes for the fuel system
What you can do
- 1Read and clear the fault code, and test-drive to see whether it returns
- 2First read and correct the other fault codes for the fuel system
- 3Check whether the fault code is still active once the other fault codes have been dealt with
- 4If the fault remains, have a workshop check the control module's signals to the sensors
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.