Diagnostic Aids
- Observing the LT FT Bn 1 and Bn 2 parameters, while driving the vehicle can determine whether the rich condition is affecting only one bank, or is common to both banks of the engine.
- A fuel system delivery condition causes this DTC to set. Thoroughly inspect all items that cause a rich condition. Refer to FUEL SYSTEM DIAGNOSIS .
- Review the Freeze Frame/Failure Records with a scan tool.