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Home >> Jeep >> 2023 >> Grand Cherokee Altitude, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 23 (Hybrid Control Processor Module (HCP) - DTCS B1271-00 To P05D3-00) >> DTC Troubleshooting >> P0071-00 Ambient Air Temperature Sensor Performance >> Enabling Conditions And Possible Causes - Ambient Air Temperature DTCS

Enabling Conditions And Possible Causes - Ambient Air Temperature DTCS

WARNING: This page is about a different variant/trim than selected.
MONITORING CONDITIONS
P0071-00 AMBIENT AIR TEMPERATURE SENSOR PERFORMANCE  Continuous with the ignition on, battery voltage above a calibrated threshold and diagnostic monitor enabled, no communication failures with the BCM, and vehicle speed is present.
P0072-00 AMBIENT AIR TEMPERATURE SENSOR CIRCUIT LOW 
P0073-00 AMBIENT AIR TEMPERATURE SENSOR CIRCUIT HIGH 
FAULT SETTING CRITERIA
P0071-00 AMBIENT AIR TEMPERATURE SENSOR PERFORMANCE  The BCM has sent a message to the Hybrid Control Processor (HCP) indicating the Ambient Air Temperature (AAT) Sensor is faulted.
P0072-00 AMBIENT AIR TEMPERATURE SENSOR CIRCUIT LOW  The BCM has sent a message to the Hybrid Control Processor (HCP) indicating the Ambient Air Temperature (AAT) Sensor is faulted.
P0073-00 AMBIENT AIR TEMPERATURE SENSOR CIRCUIT HIGH  The BCM has sent a message to the Hybrid Control Processor (HCP) indicating the Ambient Air Temperature (AAT) Sensor is faulted.
DEFAULT AND LIMP-IN ACTIONS
P0071-00 AMBIENT AIR TEMPERATURE SENSOR PERFORMANCE  Malfunction Indicator Lamp (MIL) on.
P0072-00 AMBIENT AIR TEMPERATURE SENSOR CIRCUIT LOW  Malfunction Indicator Lamp (MIL) on.
P0073-00 AMBIENT AIR TEMPERATURE SENSOR CIRCUIT HIGH  Malfunction Indicator Lamp (MIL) on.
POSSIBLE CAUSES
P0071-00 AMBIENT AIR TEMPERATURE SENSOR PERFORMANCE 
  • Ambient Temp DTCs set in the BCM
  • CAN FD Bus DTCs
  • CAN FD Bus Off Performance DTCs.
P0072-00 AMBIENT AIR TEMPERATURE SENSOR CIRCUIT LOW 
  • Ambient Temp DTCs set in the BCM
  • CAN FD Bus DTCs
  • CAN FD Bus Off Performance DTCs.
P0073-00 AMBIENT AIR TEMPERATURE SENSOR CIRCUIT HIGH 
  • Ambient Temp DTCs set in the BCM
  • CAN FD Bus DTCs
  • CAN FD Bus Off Performance DTCs.