Wait to Start Lamp Control Circuit
The ECU detects an electrical fault on the wait-to-start indicator output of the diesel preheat system. The driver may not get a correct preheat indication.
Affected components
- Wait to start lamp
- Instrument cluster
Common causes
- Medium likelihood: Indicator bulb / LED failure
- Medium likelihood: Wiring fault to instrument cluster
Diagnostic notes
- The malfunction indicator lamp may illuminate
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.