P0071low severityPowertrain
Ambient Air Temperature Sensor Range/Performance
on 2004 Subaru Legacy 3.0L H6 · AWD
What this code means
The ambient air temperature sensor reading is out of expected range or not changing appropriately.
Symptoms
- Incorrect temp reading
- Climate control issues
Common causes
- Sensor mounted near heat source
- Sensor contaminated
- Intermittent connection
Diagnostic steps
- Compare sensor reading to known temperature
- Check sensor location
- Inspect connector
Repair notes
Relocate or replace sensor.
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