DTC P0ABF-2A: Hybrid/EV Battery Current Sensor "A" Signal Stuck In Range [12/2019 - 11/2023]: Procedure

1. 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, P0B77-14	Hybrid/EV Battery Voltage Sensor "A - M" Circuit Short to Ground or Open

2. Turn the ignition switch off.

Result: 

B 

GO TO DTC CHART (HYBRID CONTROL SYSTEM). Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2019 - 09/2020]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [09/2020 - 10/2021]  , or refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2021 - 11/2023] 

Result: 

A 

See step  2

1. Turn the ignition switch to ON.
   NOTE:

   Do not turn the ignition switch to ON (READY).

2. Check the voltage of each HV battery block voltage of "Hybrid Battery Block 1 to 12 Voltage" in the Data List with the ignition switch ON.
   NOTE:

   Select "Hybrid Battery Block 1 to 12 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
   Hybrid Battery Block 12 Voltage

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Specified Condition

   Any "Hybrid Battery Block Voltage" 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

3. Turn the ignition switch off.

Result: 

A 

REPLACE BATTERY VOLTAGE SENSOR. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023] 

Result: 

B 

REPLACE HV BATTERY JUNCTION BLOCK ASSEMBLY. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023]