DTC P1A80-00: Hybrid/EV Battery Stack 1 Delta SOC High; DTC P1A85-00: Hybrid/EV Battery Stack 2 Delta SOC High; DTC P1A8A-00: Hybrid/EV Battery Stack 3 Delta SOC High; DTC P1A90-00: Hybrid/EV Battery Stack 4 Delta SOC High [12/2023 - ]: Description
WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.
The HV battery is composed of 96 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 | DTC Output from | Priority | 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) |
|
Comes on | Master Warning: Comes on |
HV Battery | A | 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) |
|
Comes on | Master Warning: Comes on |
HV Battery | A | SAE Code: P1A85 |
| P1A8A-00 | Hybrid/EV Battery Stack 3 Delta SOC High | The difference in capacity of each cell of the No. 3 HV supply stack sub-assembly exceeds the specified value. (2 trip detection logic) |
|
Comes on | Master Warning: Comes on |
HV Battery | A | SAE Code: P1A8A |
| P1A90-00 | Hybrid/EV Battery Stack 4 Delta SOC High | The difference in capacity of each cell of the No. 4 HV supply stack sub-assembly exceeds the specified value. (2 trip detection logic) |
|
Comes on | Master Warning: Comes on |
HV Battery | A | SAE Code: P1A90 |
HINT:
These DTCs can be stored after clearing the DTCs and driving the vehicle for approximately 12 minutes.