Advanced Diagnostics

DTC P0A9D (49): Battery Module Temperature Sensor 1 Circuit Low Voltage




General Description
If the battery condition monitor (BCM) module control input voltage from battery module temperature sensor 1 is below the lower limit of a set range, or if there is a short to ground in the sensor signals, a malfunction in the BCM module input circuit is detected and a DTC is stored.




Monitor Execution, Sequence, Duration, DTC Type, OBD Status




Enable Conditions

Malfunction Threshold
The battery module temperature sensor 1 output voltage is 0.05 V or less for at least 2 seconds.

Diagnosis Details

Conditions for illuminating the MIL
When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the PCM and BCM memory.

Conditions for clearing the MIL
The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by disconnecting the battery.