Common Symptoms
- Check Engine Light illuminated
- Incorrect temperature display on instrument cluster
- Climate control system operates improperly
- Engine cooling fan runs continuously or not at all
- Poor fuel economy in some cases
Most Likely Root Causes
- Shorted ambient air temperature sensor
- Damaged or chafed wiring harness to ambient temperature sensor
- Corroded or moisture-damaged sensor connector
- Failed ambient air temperature sensor
- Short to ground in sensor circuit wiring
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Component Location
Ambient air temperature sensor is typically mounted behind the front bumper or grille area, exposed to outside airflow.
Manufacturer Notes
Some vehicles share this sensor circuit with HVAC system logic, affecting both engine management and climate control functions.
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