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P0074 - Ambient Air Temperature Sensor Circuit A Intermittent/Erratic

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DTC DESCRIPTION P0074 - AMBIENT AIR TEMPERATURE SENSOR CIRCUIT A INTERMITTENT/ERRATIC

Description:  This DTC sets when the ambient air temperature (AAT) sensor signal changes beyond the minimum or maximum calibrated limit.
Possible Causes: 
  • AAT circuit intermittent open
  • AAT circuit intermittent short to voltage
  • AAT circuit intermittent short to ground
  • Damaged AAT sensor
Diagnostic Aids:  Check the harness and connection. Monitor the sensor PID while wiggling and bending the harness from the sensor to the PCM.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to Pinpoint Test FA.
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