DTC 18531

SAE VAG Description
P2099 18531 Post Catalyst Fuel Trim System Too Rich Bank 2

G130 - Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC)
G131 - Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC)
- Oxygen sensor heater for oxygen sensors behind Three Way Catalytic Converter (TWC) checking. Oxygen Sensor Heater For Oxygen Sensor Behind Three Way Catalytic Converter (TWC) Checking

Note: Bank 1 Sensor 2

- Intake system checking for leaks (unmetered air). Intake System, Checking For Leaks (Unmetered Air)