OBD-II code · Powertrain (generic, extended)
P239F O2 Sensor Out of Range During Deceleration Bank 2 Sensor 2
O2 Sensor Out of Range During Deceleration Bank 2 Sensor 2: the control module has detected this fault condition. (Code P239F)
Is it safe to drive with P239F?
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 B2s2
Related codes
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Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.