Powertrain
generic / SAE
P223E
O2 Sensor Reference Resistance Out Of Range (Bank 1)
The reference resistance of the wide-band O2 sensor on bank 1 is outside the calibrated range — used by the controller to set the operating point of the pumping cell. Drift here indicates sensor element ageing or contamination.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number2 / 3E
Possible causes
- Sensor element aged or contaminated high
Symptoms
- Check engine light on
- Increased fuel consumption
- Possible rough idle or hesitation
- Failed emissions test
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–500 €
- Estimated time: 0.5–2.5 h
- Component: oxygen sensor
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012