Powertrain
Definition only
Lights the check engine lamp
P2274: O2 Sensor Signal Biased/Stuck Lean (Bank 1 Sensor 3)
Standardized SAE J2012 code · P22xx — Fuel & air metering and auxiliary emission controls
What does P2274 mean?
O2 Sensor Signal Biased/Stuck Lean (Bank 1 Sensor 3): the control module has detected this fault condition.
The code tells you which monitor failed, not which part is broken. Test before replacing parts.
Symptoms
- Check engine light on
- Increased fuel consumption
- Possible rough idle or hesitation
- Failed emissions test
Common causes
- High Sensor aged or contaminated
Likelihood is a general estimate across vehicles; your make and model may differ.
Add your car to see reports of P2274 on the same make and model first.
P2274 in the community
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