DTC P0ABF-2A: Hybrid/EV Battery Current Sensor "A" Signal Stuck In Range [02/2019 - ]: Procedure

WARNING: This page is about a different variant/trim than selected.

CHECK DTC OUTPUT (HYBRID CONTROL)

Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.

Check and record any HV system DTCs and freeze frame data.

Powertrain > Hybrid Control > Trouble Codes

Result

Result	Proceed to
"Only DTC P0ABF-2A is output" or "DTC P0ABF-2A and DTCs other than those in the following table are output".	A
DTC P0ABF-2A and any of the DTCs in the following table are output at the same time.	B

Relevant DTC
P0A95-63	High Voltage Fuse Accumulated Load History
P0ABF-11	Hybrid/EV Battery Current Sensor "A" Circuit Short to Ground
P0ABF-15	Hybrid/EV Battery Current Sensor "A" Circuit Short to Auxiliary Battery or Open
P0AFC-00	Hybrid/EV Battery Sensor Module
P0AFC-96	Hybrid/EV Battery Sensor Module Component Internal Failure
P1CBB-12	Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Auxiliary Battery
P1CBB-14	Hybrid/EV Battery Current Sensor Power Supply Circuit Short to Ground or Open
P308A-12	Hybrid/EV Battery Voltage Sensor All Circuit Short to Auxiliary Battery
P0B3B-14, P0B40-14, P0B45-14, P0B4A-14, P0B4F-14, P0B54-14, P0B59-14, P0B5E-14, P0B63-14, P0B68-14, P0B6D-14, P0B72-14	Hybrid/EV Battery Voltage Sensor "A - L" Circuit Short to Ground or Open

Turn the ignition switch off.

Result:

GO TO DTC CHART (HYBRID CONTROL SYSTEM)

Refer to DIAGNOSTIC TROUBLE CODE CHART [02/2019 - 06/2020] , or refer to DIAGNOSTIC TROUBLE CODE CHART [06/2020 - 12/2021] , or refer to DIAGNOSTIC TROUBLE CODE CHART [12/2021 - 11/2024] , or refer to DIAGNOSTIC TROUBLE CODE CHART [11/2024 - ]

Result:

See step 2

READ VALUE USING TECHSTREAM

Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
NOTE:
Do not turn the ignition switch to ON (READY).

Enter the following menus: Powertrain / Hybrid Control / Data List / Hybrid Battery Block 1 to 11 Voltage.

NOTE:

Select "Hybrid Battery Block 1 to 11 Voltage" only. (Do not select any other Data List items.)

Powertrain > Hybrid Control > Data List

Tester Display
Hybrid Battery Block 1 Voltage
Hybrid Battery Block 2 Voltage
Hybrid Battery Block 3 Voltage
Hybrid Battery Block 4 Voltage
Hybrid Battery Block 5 Voltage
Hybrid Battery Block 6 Voltage
Hybrid Battery Block 7 Voltage
Hybrid Battery Block 8 Voltage
Hybrid Battery Block 9 Voltage
Hybrid Battery Block 10 Voltage
Hybrid Battery Block 11 Voltage

Check the voltage of each "Battery Block Vol" of "Hybrid Battery Block 1 to 11 Voltage" in the Data List with the ignition switch ON.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Specified Condition

Any "Battery Block Vol" changes by 0.3 V or more, 60 seconds after the ignition switch is turned to ON. (The difference between the maximum and minimum voltage is 0.3 V or more.)

Result

Result	Proceed to
The change in voltage of any "Hybrid Battery Block Voltage" is 0.3 V or more.	A
Other than above	B

Turn the ignition switch off.

Result:

REPLACE BATTERY VOLTAGE SENSOR

Refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 08/2020] , or refer to REMOVAL [08/2020 - 12/2021] , or refer to REMOVAL [12/2021 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023] , or refer to REMOVAL [10/2023 - ]

Result:

REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY

Refer to REMOVAL [02/2019 - 10/2019] , or refer to REMOVAL [10/2019 - 06/2020] , or refer to REMOVAL [06/2020 - 08/2020] , or refer to REMOVAL [08/2020 - 12/2021] , or refer to REMOVAL [12/2021 - 10/2022] , or refer to REMOVAL [10/2022 - 10/2023] , or refer to REMOVAL [10/2023 - ]