P0072low severityPowertrain
Ambient Air Temperature Sensor Circuit Low
on 2000 Subaru Impreza 1.8L H4 · AWD
What this code means
The ambient air temperature sensor circuit voltage is lower than expected, indicating a short or very high temperature reading.
Symptoms
- Check Engine Light
- Very high temp display
Common causes
- Short to ground
- Faulty sensor
- Damaged wiring
Diagnostic steps
- Test circuit voltage
- Check for shorts
- Test sensor resistance
Repair notes
Repair short or replace sensor.
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