VOLVO
ECM-P223712 - O2 Sensor Positive Current Control Circuit / Open - Bank 1, Sensor 1. General Electrical Failures. Circuit short to battery
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
3 modelsS60 (2011–), S80 (2007–), V70 (2008–)
Show models by year and engine (9)
- Volvo S60 (2011–)2011–2012Engine B5254T5 only
- Volvo S80 (2007–)2007–2008Engine B5254T6 only
- Volvo S80 (2007–)2009Engine B5254T6, B5254T8 only
- Volvo S80 (2007–)2010–2011Engine B5254T10, B5254T11, B5254T8 only
- Volvo S80 (2007–)2012Engine B5254T10 only
- Volvo V70 (2008–)2008Engine B5254T6 only
- Volvo V70 (2008–)2009Engine B5254T6, B5254T8 only
- Volvo V70 (2008–)2010–2011Engine B5254T10, B5254T11 only
- Volvo V70 (2008–)2012Engine B5254T10 only
What does this fault code mean?
The module sees that the pump current to the front heated oxygen sensor has stopped and sets the sensor signal to a default value. Although the code is named as a short to supply voltage, it concerns the pump current. The fault may lie in the contacts, the pump current wire or the sensor.
Possible causes
- Contact resistance and oxidation in the terminals
- Open circuit in the pump current wire
- Damaged front heated oxygen sensor (HO2S)
What you can do
- 1Clear the code and drive the car, then read it again
- 2Check the sensor connector for contact resistance and oxidation. Rust-dissolving spray and grease do not belong in the connector
- 3Use a multimeter to check that the pump current wire is unbroken, preferably measuring from the back of the contacts
- 4Try a new oxygen sensor if the wiring is intact
- 5If the fault remains after that, have a workshop diagnose further
Symptoms you may notice1
- Malfunction indicator lamp (MIL) lit
General guidance for car owners. Diagnosis on the car can point to a different cause.