DTC P0070 BMW

Ambient Air Temperature Sensor Malfunction

Ambient Air Temperature Sensor Malfunction

Description

Key on or engine running (at over 800rpm), the vehicle velocity is over 25mph for 26 seconds, the ambient temperature is 20 degrees above or below the model figure for four seconds. This is a thermistor-type sensor with a variable resistance that changes

Cause and Solution

IAT sensor signal circuit is grounded (check wiring connector)
Resistance value between sockets 33 and 36 out of range
IAT sensor has an open circuit
IAT sensor is damaged or it has failed

Video Guide

Duration: PT4M18S | Uploaded: 2020-06-20

Diagnostic Info

  • DTC Code: P0070
  • Brand: BMW
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