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Home >> Toyota >> 2022 >> Corolla Cross L, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 30 (Hybrid Battery System - Diagnostic Codes (2 Of 2) & Circuit Tests) >> Hybrid Battery System >> DTC P1A80-00: Hybrid/EV Battery Stack 1 Delta SOC High; DTC P1A85-00: Hybrid/EV Battery Stack 2 Delta SOC High [11/2022 - ] >> Description

DTC P1A80-00: Hybrid/EV Battery Stack 1 Delta SOC High; DTC P1A85-00: Hybrid/EV Battery Stack 2 Delta SOC High [11/2022 - ]: Description

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The HV battery is composed of 60 cells (3.7 V each) in series. The battery ECU assembly monitors the difference in capacity of each HV battery cell to detect malfunctions of the HV battery.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate Note
P1A80-00 Hybrid/EV Battery Stack 1 Delta SOC High The difference in capacity of each cell of the No. 1 HV supply stack sub-assembly exceeds the specified value.
(2 trip detection logic)
  • HV battery
  • HV battery junction block assembly
  • Battery ECU assembly
Comes on Master Warning:
Comes on
SAE Code: P1A80
P1A85-00 Hybrid/EV Battery Stack 2 Delta SOC High The difference in capacity of each cell of the No. 2 HV supply stack sub-assembly exceeds the specified value.
(2 trip detection logic)
  • HV battery
  • HV battery junction block assembly
  • Battery ECU assembly
Comes on Master Warning:
Comes on
SAE Code: P1A85

HINT: