DTC P0A81-00: Hybrid/EV Battery Cooling Fan 1 Control Circuit High; DTC P0A81-15: Hybrid/EV Battery Cooling Fan 1 Circuit Short to Auxiliary Battery or Open [12/2022 - ]: Description

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Refer to the description for DTC P0A81-11.

Refer to DESCRIPTION

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Warning Indicate	DTC Output from	Priority	Note
P0A81-00	Hybrid/EV Battery Cooling Fan 1 Control Circuit High	Both of the following conditions are met: The HV battery temperature is high and the hybrid battery cooling fan speed calculated based on the battery cooling blower assembly output frequency (FP0) is not within the target control speed range. The HV battery temperature is high and the battery cooling blower assembly speed is excessively high when a speed below a certain level is requested. (1 trip detection logic)	Battery cooling blower assembly Battery ECU assembly	Comes on	Master warning: Comes on	HV Battery	A	SAE Code: P0A85
P0A81-15	Hybrid/EV Battery Cooling Fan 1 Circuit Short to Auxiliary Battery or Open	Both of the following conditions are met: The speed calculated based on the battery cooling blower assembly output frequency (FP0) is not within the target control speed range. The battery cooling blower assembly speed is excessively high when a speed below a certain level is requested. (2 trip detection logic)	Battery cooling blower assembly Battery ECU assembly	Comes on	Master warning: Comes on	HV Battery	A	SAE Code: P0A85

HINT:

"Hybrid/EV Battery Cooling Fan 1 Frequency" is detected when the battery cooling blower assembly is operating and its value changes in proportion to the battery cooling blower assembly speed.
If the battery cooling blower assembly speed is excessively high, this DTC is stored.