Ambient Air Temperature Sensor Circuit A
Generic electrical fault in the ambient air temperature sensor A circuit. Used by the ECU for cold-start corrections, climate logic, and intake-air calculations.
Affected components
- Ambient air temp sensor
- Sensor wiring
Common causes
- High likelihood: Sensor element failed
- Medium likelihood: Wiring open or connector loose
Diagnostic notes
- The malfunction indicator lamp may illuminate
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.