DTC P1A80-00: Hybrid/EV Battery Stack 1 Delta SOC High; DTC P1A85-00: Hybrid/EV Battery Stack 2 Delta SOC High [11/2021 - ]: Description

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The HV battery is composed of 70 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
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)	No. 1 HV supply stack sub-assembly Hybrid battery terminal block Battery ECU assembly	Comes on	Master Warning: Comes on
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)	No. 2 HV supply stack sub-assembly Hybrid battery terminal block Battery ECU assembly	Comes on	Master Warning: Comes on

HINT:

These DTCs can be stored after clearing the DTCs and driving the vehicle for approximately 12 minutes.
In order to ensure HV battery performance, appropriate cooling performance must be maintained. Perform the following items as necessary. If cooling performance has decreased and "Maintenance Required for Traction Battery Cooling Parts See Owner's Manual" is displayed on the multi-information display, make sure to perform the following items:
- Make sure the air intake port for HV battery is not blocked.
- Make sure there are no gaps between the connecting parts of the ducts.
- Clean the No. 1 HV battery intake filter.
  1. Clear the DTCs to reset the learning values even if no DTCs are stored.