What does code P0165 mean?
The oxygen sensor responds slowly to air fuel mixture changes
OBD-II Code
P0165 — Oxygen Sensor Circuit Slow Response Bank 2 Sensor 3
The oxygen sensor responds slowly to air fuel mixture changes
Common symptoms
- High fuel consumption
- delayed response
- check engine light
Possible causes
- Aged sensor
- internal contamination
- minor exhaust leaks
Initial recommendation
Inspect exhaust leaks and replace sensor if response remains slow.
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 P0165 with your vehicle's actual symptoms for more complete diagnostic guidance.
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