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Home >> Toyota >> 2025 >> Prius Plug-In Hybrid SE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 9 (Hybrid Battery System (HEV) - Diagnostic Codes (1 Of 2)) >> HYBRID BATTERY SYSTEM (for M20A-FXS) >> DTC P0C30-00: Hybrid/EV Battery State of Charge High [12/2022 - ] >> Description

DTC P0C30-00: Hybrid/EV Battery State of Charge High [12/2022 - ]: Description

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The battery ECU assembly monitors the operation of the hybrid battery system and will store this DTC if it detects a malfunction.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate DTC Output from Priority Note
P0C30-00 Hybrid/EV Battery State of Charge High Even though charging of the HV battery is prohibited due to the SOC reaching the upper limit, charging continues to be performed due to a hybrid control system malfunction.
(1 trip detection logic)
  • Hybrid vehicle control ECU
  • No. 1 traction battery device box
Does not come on Master Warning:
Comes on
HV Battery A SAE Code: P0C30