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; DTC P0A96-00: Hybrid/EV Battery Cooling Fan 2 Control Circuit High; DTC P0A96-15: Hybrid/EV Battery Cooling Fan 2 Circuit Short to Auxiliary Battery or Open [11/2023 - ]: Procedure
WARNING: This page is about a different car, the 2025 Toyota Highlander and 2024 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK DTC OUTPUT (HYBRID CONTROL)
- Check for DTCs.
Powertrain > Hybrid Control > Trouble Codes
Result
Result Proceed to P0AFC-00 or P0AFC-96 is not output. A P0AFC-00 or P0AFC-96 is output. B - Turn the ignition switch off.
Result:
B
GO TO DTC CHART (HYBRID CONTROL SYSTEM). Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2023 - ]
Result:
A
See step 2
- Check for DTCs.
- CHECK DTC
- Check the DTCs that were output when the vehicle was brought to the workshop.
Result
Result Proceed to P0A81-00 or P0A81-15 is also output. A P0A96-00 or P0A96-15 is also output. B
Result:
B
See step 4
Result:
A
See step 3
- Check the DTCs that were output when the vehicle was brought to the workshop.
- CHECK BATTERY VOLTAGE SENSOR (FREQUENCY)
See step 7
Result
Proceed to OK NG Result:
OK
REPLACE BATTERY COOLING BLOWER ASSEMBLY (NO. 0). Refer to REMOVAL [12/2019 - ]
Result:
NG
REPLACE BATTERY VOLTAGE SENSOR. Refer to REMOVAL [11/2023 - ]
- CHECK BATTERY VOLTAGE SENSOR (FREQUENCY)
See step 33
Result
Proceed to OK NG Result:
OK
REPLACE BATTERY COOLING BLOWER ASSEMBLY (NO. 1). Refer to REMOVAL [12/2019 - ]
Result:
NG
REPLACE BATTERY VOLTAGE SENSOR. Refer to REMOVAL [11/2023 - ]