P0070low severityPowertrain
Ambient Air Temperature Sensor Circuit
on 2016 Audi TT 2.0L Turbo I4 · AWD
What this code means
The PCM detected a malfunction in the ambient air temperature sensor circuit.
Symptoms
- Check Engine Light
- Incorrect climate control operation
- Incorrect outside temp display
Common causes
- Faulty ambient temp sensor
- Wiring damage
- Sensor location issue (heat soak)
Diagnostic steps
- Test sensor resistance across temperature range
- Inspect wiring
- Check sensor mounting location
Repair notes
Replace ambient air temperature sensor.
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