Code 41

Trouble code (41) indicates that the mixture us too lean. When another trouble code is not outputter, all system component are electrically in good order. Check the following:

1. Injector nozzles (for clogging)
2. Fuel pressure
3. Performance characteristics of water temperature sensor.
   NOTE: If the above three are OK, check the following:
4. Drive some distance after replacing the air flow meter. If still good proceed to next step.
5. Replace fuel injectors and drive some distance. If still good proceed to next step.
6. Replace control unit.