What does code P0159 mean?
The rear oxygen sensor responds slowly to air fuel mixture changes
OBD-II Code
P0159 — Oxygen Sensor Circuit Slow Response Bank 2 Sensor 2
The rear oxygen sensor responds slowly to air fuel mixture changes
Common symptoms
- Slight increase in fuel consumption
- check engine light
Possible causes
- Aged oxygen sensor
- contamination
Initial recommendation
Replace oxygen sensor and inspect exhaust seals.
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
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