DTC P1A81-00: Hybrid/EV Battery Stack 1 Delta SOC High (Extreme); DTC P1A86-00: Hybrid/EV Battery Stack 2 Delta SOC High (Extreme) [08/2020 - ]: 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
P1A81-00	Hybrid/EV Battery Stack 1 Delta SOC High (Extreme)	The difference in capacity of each cell of the No. 1 HV supply stack sub-assembly exceeds the specified value excessively. (1 trip detection logic)	No. 1 HV supply stack sub-assembly Battery ECU assembly Hybrid battery terminal block	Comes on	Master Warning Light: Comes on
P1A86-00	Hybrid/EV Battery Stack 2 Delta SOC High (Extreme)	The difference in capacity of each cell of the No. 2 HV supply stack sub-assembly exceeds the specified value excessively. (1 trip detection logic)	No. 2 HV supply stack sub-assembly Battery ECU assembly Hybrid battery terminal block	Comes on	Master Warning Light: Comes on

RELATED DATA LIST

DTC No.	Data List
P1A81-00	Hybrid/EV Battery Cell 1 to 70 Voltage Hybrid/EV Battery Cell 1 to 70 Internal Resistance Hybrid/EV Battery SOC Hybrid/EV Battery Current Hybrid/EV Battery Voltage
P1A81-00

HINT:

These DTCs can be stored after clearing the DTCs and driving the vehicle for approximately 10 minutes.