OBD-II code · Powertrain (generic, extended)
P239E O2 Sensor Out of Range During Deceleration Bank 1 Sensor 2
O2 Sensor Out of Range During Deceleration Bank 1 Sensor 2: the control module has detected this fault condition. (Code P239E)
Is it safe to drive with P239E?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor element slow or aged
Symptoms
- Check engine light on
- Increased fuel consumption
- Possible rough idle or hesitation
- Failed emissions test
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.6–1.5 h
- Emissions test
- Likely to fail
- Parts involved
- Oxygen Sensor B1s2
Related codes
- P232FO2 Sensor Out of Range During Deceleration Bank 1 Sensor 2
- P2379O2 Sensor Out of Range During Deceleration Bank 2 Sensor 2
- P239FO2 Sensor Out of Range During Deceleration Bank 2 Sensor 2
- P2C65O2 Sensor Out of Range During Deceleration Bank 1 Sensor 3
- P239BDiesel Intake Air Flow B Control Motor Current Range or Performance
- P239CDiesel Intake Air Flow B Control System High Air Flow Detected
- P239DDiesel Intake Air Flow B Control System Low Air Flow Detected
- P23A0O2 Sensor Exhaust Sample Error Bank 1 Sensor 2
- P23A1O2 Sensor Exhaust Sample Error Bank 2 Sensor 2
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.