What does code P0142 mean?
The oxygen sensor Bank 1 Sensor 3 has a general electrical circuit fault
OBD-II Code
P0142 — Oxygen Sensor Circuit Malfunction Bank 1 Sensor 3
The oxygen sensor Bank 1 Sensor 3 has a general electrical circuit fault
Common symptoms
- Increased fuel consumption
- irregular mixture
- steady check engine light
Possible causes
- Faulty sensor
- broken wiring
- dirty connector
Initial recommendation
Check wiring continuity and replace sensor if unresponsive.
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 P0142 with your vehicle's actual symptoms for more complete diagnostic guidance.
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