What does code P0141 mean?
The internal heater of the rear oxygen sensor on bank 1 is not functioning correctly
OBD-II Code
P0141 — Oxygen Sensor Heater Circuit Malfunction Bank 1 Sensor 2
The internal heater of the rear oxygen sensor on bank 1 is not functioning correctly
Common symptoms
- Poor cold operation
- increased fuel consumption during startup
- check engine light
Possible causes
- Burned heater element
- blown fuse
- damaged wiring
Initial recommendation
Check heater fuse and wiring, replace sensor if heater does not operate.
Safety notice
This information is for guidance only and does not replace a physical vehicle inspection or diagnosis by a qualified mechanic. If the vehicle has severe power loss, smoke, a fuel odor, overheating, brake or steering problems, or any unsafe behavior, avoid driving it and seek professional inspection.
Analyze this code with MecaOBD
Use the app to combine code P0141 with your vehicle's actual symptoms for more complete diagnostic guidance.
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