HYBRID BATTERY SYSTEM, Diagnostic DTC:P0A80-123

DTC Code	DTC Name
P0A80-123	Replace Hybrid Battery Pack

DESCRIPTION

The hybrid vehicle control ECU assembly controls the SOC (state of charge) of the HV battery at a constant level during driving. The HV battery is composed of 32 modules, and each module consists of six 1.2 V cells in series. The battery voltage sensor monitors battery block voltage at 16 locations. Each battery block is composed of 2 modules in a set.


*1	Battery Block
*2	Battery Module
*3	Battery Voltage Sensor

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Warning Indicate
P0A80-123	Replace Hybrid Battery Pack	An internal malfunction of the HV battery is detected and the voltage difference between battery blocks is larger than the specified value. (2 trip detection logic)	HV battery Battery voltage sensor	Comes on	Master Warning Light: Comes on

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

Warning Indicate

P0A80-123

Replace Hybrid Battery Pack

An internal malfunction of the HV battery is detected and the voltage difference between battery blocks is larger than the specified value.

(2 trip detection logic)

HV battery
Battery voltage sensor

Comes on

Master Warning Light:

Comes on

Related Data List
DTC No.	Data List
P0A80-123	Battery Block Vol -V01 to V16 State of Charge (All Bat)

The following items can be helpful when performing repairs:

Data List

Ready Signal
Vehicle Spd
Accelerator Degree
Shift Sensor Shift Pos
Engine Revolution
Internal Resistance R01 to R17
Power Resource VB
Batt Pack Current Val
Auxiliary Battery Vol
Battery Low Time
DC Inhibit Time
SOC after IG-ON
Status of Charge Max
Status of Charge Min
DTC Clear Run Distance
Engine Run Time

Operation History Data

Main Battery Low Voltage

Tech Tips

This DTC can be stored after clearing DTCs and driving the vehicle for approximately 10 minutes. (As 2 trip detection logic is used, check for DTCs including pending DTCs.)
DTC P0A80-123 is stored when a malfunction is detected in the HV battery or battery voltage sensor. If the HV supply battery is malfunctioning, the malfunction may not be reproduced when the condition of the HV supply battery changes due to difference in driving load (amperage), battery SOC and battery temperature. Therefore, use the freeze frame data when performing a repair.

When the HV battery is malfunctioning:

- Voltage of 1 or more of the battery blocks has dropped. (voltage difference from that of the next block is 1 V or more.)
- Voltage of all battery blocks is output randomly with no certain pattern.

When the battery voltage sensor is malfunctioning:

- Differences in battery block voltages have a certain pattern.

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 hybrid battery cooling parts at your dealer" is displayed on the multi-information display, make sure to perform the following items:

Make sure the air intake port is not blocked.

Make sure there are no gaps between the connecting parts of the ducts.

Clean the filter of the No. 2 hybrid battery intake duct.

Clear the DTCs to reset the learning values even if no DTCs are stored.

CAUTION / NOTICE / HINT

CAUTION:

When disposing of an HV battery, make sure to return it through an authorized collection agent who is capable of handling it safely. If the HV battery is returned via the manufacturer specified route, it will be returned properly and in a safe manner by an authorized collection agent.

PROCEDURE

CHECK DTC OUTPUT (HYBRID CONTROL)

Result

Result	Proceed to
P0AFC-123 is not output.	A
P0AFC-123 is also output.	B

Connect the GTS to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

Check for and record any HV system DTCs, INF codes and freeze frame data.

Powertrain > Hybrid Control > Trouble Codes

Result

Result	Proceed to
P0AFC-123 is not output.	A
P0AFC-123 is also output.	B

Turn the power switch off.
Disconnect the GTS from the DLC3.

GO TO DTC CHART (P0AFC-123) Click here

CHECK FREEZE FRAME DATA

Connect the GTS to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
Read output DTCs.

Powertrain > Hybrid Control > Trouble Codes
Using the GTS, make a note of the freeze frame data item "Battery Block Vol -V01 to V16".

Compare the freeze frame data item "Battery Block Vol -V01 to V16" values with those shown in the following combination tables.

Table 1
Circuit A Battery Block	Circuit B Battery Block	Condition
Battery Block Vol - V01 (VB1)	Battery Block Vol - V02 (VB2)	"Battery Block Vol - V01" - "Battery Block Vol - V02" = 0.3 V or more
Battery Block Vol - V04 (VB4)	Battery Block Vol - V03 (VB3)	"Battery Block Vol - V04" - "Battery Block Vol - V03" = 0.3 V or more
Battery Block Vol - V05 (VB5)	Battery Block Vol - V06 (VB6)	"Battery Block Vol - V05" - "Battery Block Vol - V06" = 0.3 V or more
Battery Block Vol - V08 (VB8)	Battery Block Vol - V07 (VB7)	"Battery Block Vol - V08" - "Battery Block Vol - V07" = 0.3 V or more
Battery Block Vol - V09 (VB9)	Battery Block Vol - V10 (VB10)	"Battery Block Vol - V09" - "Battery Block Vol - V10" = 0.3 V or more
Battery Block Vol - V12 (VB12)	Battery Block Vol - V11 (VB11)	"Battery Block Vol - V12" - "Battery Block Vol - V11" = 0.3 V or more
Battery Block Vol - V13 (VB13)	Battery Block Vol - V14 (VB14)	"Battery Block Vol - V13" - "Battery Block Vol - V14" = 0.3 V or more
Battery Block Vol - V16 (VB16)	Battery Block Vol - V15 (VB15)	"Battery Block Vol - V16" - "Battery Block Vol - V15" = 0.3 V or more

Table 2
Circuit A Battery Block	Circuit B Battery Block	Condition
Battery Block Vol - V01 (VB1)	Battery Block Vol - V02 (VB2)	"Battery Block Vol - V02" - "Battery Block Vol - V01" = 0.3 V or more
Battery Block Vol - V04 (VB4)	Battery Block Vol - V03 (VB3)	"Battery Block Vol - V03" - "Battery Block Vol - V04" = 0.3 V or more
Battery Block Vol - V05 (VB5)	Battery Block Vol - V06 (VB6)	"Battery Block Vol - V06" - "Battery Block Vol - V05" = 0.3 V or more
Battery Block Vol - V08 (VB8)	Battery Block Vol - V07 (VB7)	"Battery Block Vol - V07" - "Battery Block Vol - V08" = 0.3 V or more
Battery Block Vol - V09 (VB9)	Battery Block Vol - V10 (VB10)	"Battery Block Vol - V10" - "Battery Block Vol - V09" = 0.3 V or more
Battery Block Vol - V12 (VB12)	Battery Block Vol - V11 (VB11)	"Battery Block Vol - V11" - "Battery Block Vol - V12" = 0.3 V or more
Battery Block Vol - V13 (VB13)	Battery Block Vol - V14 (VB14)	"Battery Block Vol - V14" - "Battery Block Vol - V13" = 0.3 V or more
Battery Block Vol - V16 (VB16)	Battery Block Vol - V15 (VB15)	"Battery Block Vol - V15" - "Battery Block Vol - V16" = 0.3 V or more

Tech Tips

When an internal malfunction occurs in the battery voltage sensor, this symptom (difference in voltage of 0.3 V or more for all 8 pairs of blocks) will occur.

Result

Result	Proceed to
All conditions in table 1 are met.	A
All conditions in table 2 are met.	A
Other than above	B

Turn the power switch off.
Disconnect the GTS from the DLC3.

REPLACE BATTERY VOLTAGE SENSOR Click here

REPLACE HV BATTERY Click here