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Home >> Toyota >> 2022 >> Avalon XLE >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Hybrid Control System (Nickel Metal Hydride) - Diagnostic Codes (P0560-P0A9B)) >> HYBRID CONTROL SYSTEM (for NICKEL METAL HYDRIDE BATTERY) >> DTC P0A81-96: Hybrid/EV Battery Cooling Fan 1 Component Internal Failure; DTC P0A81-98: Hybrid/EV Battery Cooling Fan 1 Component or System Over Temperature [04/2018 - 08/2020] >> Description

DTC P0A81-96: Hybrid/EV Battery Cooling Fan 1 Component Internal Failure; DTC P0A81-98: Hybrid/EV Battery Cooling Fan 1 Component or System Over Temperature [04/2018 - 08/2020]: Description

WARNING: This page is about a different car, the 2020 Toyota Avalon and 2019 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

Refer to the description for DTC P0A81-11.

Refer to DESCRIPTION 

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P0A81-96 Hybrid/EV Battery Cooling Fan 1 Component Internal Failure The battery cooling blower assembly is malfunctioning and the actual speed is not within the specified range of the target speed calculated by the ECU.*
*: This DTC is not stored when "Hybrid Battery Cooling Fan 1 Frequency" is excessively low or high.
(2 trip detection logic)
  • Battery cooling blower assembly
  • Battery voltage sensor
  • Hybrid vehicle control ECU
  • No. 1 HV battery intake filter
  • No. 1 Hybrid battery intake duct
  • No. 1 Hybrid battery intake duct LH
  • Wire harness or connector
Comes on Master Warning Light:
Comes on
P0A81-98 Hybrid/EV Battery Cooling Fan 1 Component or System Over Temperature The HV battery temperature is high and the battery cooling blower assembly is malfunctioning and the actual speed is not within the specified range of the target speed calculated by the ECU.*
*: This DTC is not stored when "Hybrid Battery Cooling Fan 1 Frequency" is excessively low or high.
(1 trip detection logic)
  • Battery cooling blower assembly
  • Battery voltage sensor
  • Hybrid vehicle control ECU
  • No. 1 HV battery intake filter
  • No. 1 Hybrid battery intake duct
  • No. 1 Hybrid battery intake duct LH
  • Wire harness or connector
Comes on Master Warning Light:
Comes on
RELATED DATA LIST

DTC No. Data List
P0A81-96
  • Hybrid Battery Cooling Fan 1 Drive Request
  • Hybrid Battery Cooling Fan 1 Drive Status
  • Hybrid Battery Cooling Fan 1 Frequency
P0A81-98

The following items can be helpful when performing repairs:

Data List 

HINT: 

"Hybrid 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 rotation speed.