System Too Rich Off Idle Bank 2
Bank 2 fuel trim shows a rich shift during off-idle conditions. The ECU subtracts fuel to maintain proper combustion. Common causes are stuck injectors or excess fuel pressure.
Affected components
- Fuel injector
- Fuel pressure regulator
- Evap purge valve
Common causes
- High likelihood: Leaking injector on bank 2
- Medium likelihood: Excessive fuel pressure
Possible symptoms
- Check engine light on
- Increased fuel consumption
- Black smoke from exhaust on acceleration
- Smell of unburned fuel, fouled spark plugs
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.