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P0073 - Ambient Air Temperature Sensor Circuit High

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P0073 - AMBIENT AIR TEMPERATURE SENSOR CIRCUIT HIGH

Description:  This DTC sets when the ambient air temperature (AAT) sensor signal is greater than the self-test maximum.
Possible Causes: 
  • AAT circuit open
  • AAT circuit short to voltage
  • Damaged AAT sensor
Diagnostic Aids: 
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST FA: AMBIENT AIR TEMPERATURE (AAT) SENSOR .