OBD codes / P2271
P2271
ModerateO2 Sensor Signal Stuck Rich (Bank 1, Sensor 2)
Get it looked at soon to avoid further wear.
Likely causes
- a failing sensor, actuator, or solenoid in this circuit
- damaged wiring, a loose connector, or poor ground
Common fixes
- confirm the code with a scan tool and note any companion codes
- inspect the wiring and connector for the affected component
- run a diagnosis for your exact vehicle to pinpoint the cause
Seeing P2271 on your car? Get a diagnosis specific to your exact year, make and model.
Diagnose P2271 for my vehicleGeneric OBD-II reference. Manufacturer-specific behavior varies — confirm with a scan tool and, for safety-related codes, a professional inspection.