Scanline › Fault codes › Exhaust sensors
VAG 16517O2 sensor slow response (bank 1 sensor 1)
16517 is the VW Group 5-digit number VCDS (and older VAG-COM versions) shows for P0133. P0133 means “O2 sensor slow response (bank 1 sensor 1)”. 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 number16517
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
- Ageing upstream oxygen sensor
- exhaust leak
Typical causes are a starting point, not a diagnosis of your car.
Related codes
Got this code on your car?
Paste your whole scan into Scanline to see which faults are current and which are old news. It runs in your browser; nothing is uploaded.
Open ScanlineScanline explains fault codes; it isn't a repair authority. This page explains what the code means; it can't tell you what is wrong with your car. Ross-Tech's wiki has their own notes on VW Group faults.