What does code P0136 mean?
Fault detected in the rear oxygen sensor circuit on bank 1 after the catalytic converter
OBD-II Code
P0136 — Oxygen Sensor Circuit Malfunction Bank 1 Sensor 2
Fault detected in the rear oxygen sensor circuit on bank 1 after the catalytic converter
Common symptoms
- Few symptoms
- steady check engine light
- slight fuel consumption increase
Possible causes
- Damaged wiring
- faulty oxygen sensor
- exhaust leak
Initial recommendation
Inspect wiring and exhaust leaks, replace sensor if signal does not vary.
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 P0136 with your vehicle's actual symptoms for more complete diagnostic guidance.
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