July 3, 2026 Service bulletin

Flash: Integrated Dual Charging Module (IDCM) Updates Customers must experience a Malfunction Indicator...

Jeep technical service bulletin 08-260-26 for 2021 Jeep Wrangler 4xe.

Bulletin number: 08-260-26
Component: Electrical system
Summary: Flash: Integrated Dual Charging Module (IDCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation SYMPTOM: the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ● B22A9-87 - ECU Internal Performance - Missing Message. ● P0D21-00 - Battery Charger "A" Output Voltage Too Low. ● B22A9-16 - ECU Internal Performance-Circuit Voltage Below Threshold. ● B22A9-17 - ECU Internal Performance-Circuit Voltage Above Threshold. ● B22A9-19 - ECU Internal Performance - Overcurrent. ● B22A9-64 - ECU Internal Performance-Signal Plausibility Failure. ● P0D27-00 - Battery Charger 1 Input Voltage Too Low. Customers may also comment on one or more of the following: ● Unable to charge the vehicle with level 2 charger. ● Vehicle would not charge and the charge station circuit breaker in the house / receptacle trips when its plugged into the vehicle. This bulletin involves reprogramming the IDCM with the latest software available.

Owners of these vehicles have filed 5 complaints in the electrical category.

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