If the battery has been deeply discharged or sat idle for long periods, the cells in Block 15 may have reversed polarity or suffered severe sulfation.
This code is a "2-trip" detection logic, meaning the system must detect the fault during two consecutive driving cycles (usually requiring about 10 minutes of driving) before the check engine light stays on. toyota p1ac000 better
: Dust or debris buildup in the HV battery cooling fan or filter can also lead to this condition, as reported in Technical Service Bulletins (TSBs) . 🛠️ Common Symptoms Check Engine light (MIL) remains ON. If the battery has been deeply discharged or
The Toyota diagnostic trouble code (DTC) typically indicates a low voltage condition in one or more cells of the High Voltage (HV) hybrid battery . When this code appears, it means the hybrid control system has detected a voltage difference between battery blocks that exceeds a safe threshold—usually 1.2 V or more . 🛠️ Common Symptoms Check Engine light (MIL) remains ON
