OBD-II Code · Sensors
P0071
Ambient Air Temperature Sensor Range/Performance
low severitySafe to drive$50-$200
Ambient air temp sensor reading inconsistent with other temp sensors.
Common symptoms
- CEL
- Climate control quirks
Likely causes
- Failed sensor
- Wiring
- Sensor mounted in heat-soak location
Where to start
- Try the cheapest cause first. Start by checking: failed sensor.
- Cost & scope. $50-$200
- If the code returns after the fix: escalate to a shop or scanner with live-data and freeze-frame. A code that re-sets means the underlying fault is still there.
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