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Home >> Jeep >> 2025 >> Grand Cherokee Altitude, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 32 (Battery Pack Control Module (BPCM) - DTCS P167B-00 To P1C00-00) >> DTC Troubleshooting >> P1A20-00 Battery Energy Control Module Hybrid Battery System PRECHARGE Time Too Long >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2025 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
POSSIBLE CAUSES
10 MINUTE PRE-CHARGE PENALTY TIMER IS ACTIVE
OTHER BATTERY PACK CONTROL MODULE (BPCM) DTCS PRESENT
WAKE-UP CIRCUIT DTCS PRESENT
IGNITION RUN OR RUN/START DTCS PRESENT
WARNING:

On vehicles equipped with the high voltage system, you must thoroughly read and follow all High Voltage Safety procedures. In addition, before performing any diagnostic or service procedure near a high voltage component, you must perform the High Voltage Power Down. Failure to follow these instructions may result in possible serious or fatal injury.