DTC P31B4-00: Extreme Hybrid/EV Battery Charging Current [11/2022 - ]: Procedure
WARNING: This page is about a different car, the 2025 Toyota Corolla Cross, 2024 Toyota Corolla Cross, and 2023 Toyota Corolla Cross. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK DTC OUTPUT (HV BATTERY, HYBRID CONTROL)
- Check for DTCs.
Powertrain > HV Battery > Trouble Codes
Powertrain > Hybrid Control > Trouble Codes
Result
Result Proceed to "P31B4-00" only is output. A DTCs except "P31B4-00" of hybrid battery system are output. B DTCs except "P31B4-00" of hybrid control system are output. C - Turn the ignition switch off.
Result:
A
REPLACE HYBRID VEHICLE CONTROL ECU
Refer to REMOVAL [11/2022 - 12/2024] , or refer to REMOVAL [12/2024 - ]
Result:
B
GO TO DTC CHART (HYBRID BATTERY SYSTEM). Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2022 - ]
Result:
C
GO TO DTC CHART (HYBRID CONTROL SYSTEM)
Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2022 - 12/2024] , or refer to DIAGNOSTIC TROUBLE CODE CHART [12/2024 - ]
- Check for DTCs.