Scanline › Fault codes › Fuel mixture
P2097Post-catalyst fuel trim system too rich (bank 1)
P2097 means “Post-catalyst fuel trim system too rich (bank 1)”. It's a generic powertrain code (fuel, air metering and emission controls), so it means the same on every make, including VW, Škoda, Audi, SEAT and Cupra.
- Not urgent
- SystemFuel mixture
- TypeGeneric (same on all makes)
How urgent is it?
Usually not urgent; often emissions-related.
Which system and module
Scanline files it under Fuel mixture. The first letter, P, means powertrain (engine, transmission, emissions).
Usually stored by the engine control unit (VCDS address 01, Engine).
What usually causes it
- Downstream O2 sensor
- injector
- catalyst
Typical causes are a starting point, not a diagnosis of your car.
Related codes
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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.