Intake Air Heater Control Circuit
A general circuit fault on the intake air heater control - the ECU cannot drive the grid heater at cold-start.
Affected components
- Intake air heater
Common causes
- High likelihood: Open in heater or wiring
Possible symptoms
- Check engine light on
- Possible limp mode or no-start
- Multiple follow-up faults across modules
- Reset/relearn may be needed after repair
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
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.