P0070low severityPowertrain

Ambient Air Temperature Sensor Circuit

on 2007 Mercedes-Benz S65 AMG 6.0L V12 BiTurbo M275 ยท RWD

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

  1. Test sensor resistance across temperature range
  2. Inspect wiring
  3. Check sensor mounting location

Repair notes

Replace ambient air temperature sensor.

Other Powertrain codes on this vehicle

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