VOLVO
ECM-P223711 - O2 Sensor Positive Current Control Circuit / Open - Bank 1, Sensor 1. General Electrical Failures. Circuit short to ground
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 registers that the pump current to the front heated oxygen sensor has stopped and that the sensor signal has therefore been set to a default value. Although the code is named as a short to earth, it applies to the pump current. The fault lies in the connections, 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 again to see whether it comes back
- 2Check the oxygen sensor connector for contact resistance and oxidation. Do not use rust-dissolving spray or grease in the connector
- 3Use a multimeter on the pump current wire to check for a break. If possible, measure from the back of the contacts so they are not damaged
- 4If the wiring is in order, try a new oxygen sensor
- 5If the fault remains, have a workshop with diagnostic equipment 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.