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Home >> Jeep >> 2024 >> Grand Cherokee Summit >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 24 (Battery Pack Control Module (BPCM) - DTCS P0B3C-00 To P0CD8-00) >> DTC Troubleshooting >> P0C78-00-Hybrid/EV Battery System PRECHARGE Time Too Long >> Possible Causes

Possible Causes

WARNING: This page is about a different variant/trim than selected.
Possible Causes
12 VOLT SYSTEM VOLTAGE LOW
HV FUSE OPEN
HV CABLE NOT CONNECTED TO BATTERY PACK
VEHICLE HIGH VOLTAGE CABLE DISCONNECTED (SEVERED)
SHORTED HV COMPONENT
BATTERY PACK CONTROL MODULE (BPCM)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.  Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .