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P0165O2 sensor circuit slow response (bank 2 sensor 3)
P0165 means “O2 sensor circuit slow response (bank 2 sensor 3)”. It's a generic powertrain code (fuel and air metering), so it means the same on every make, including VW, Škoda, Audi, SEAT and Cupra.
- Not urgent
- SystemExhaust sensors
- TypeGeneric (same on all makes)
- VCDS number16549
How urgent is it?
Usually not urgent; often emissions-related.
Which system and module
Scanline files it under Exhaust sensors. The first letter, P, means powertrain (engine, transmission, emissions).
Usually stored by the engine control unit (VCDS address 01, Engine).
What usually causes it
- Oxygen sensor downstream (after the catalyst)
- wiring
- exhaust leak
Typical causes are a starting point, not a diagnosis of your car.
Related codes
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