Jeep Wrangler 2021 — technical service bulletin
Bulletin 0804723 · NHTSA communication 10241116 · issued Jun 23, 2023
Technical service bulletin
communication type
Electrical System
component
2021
model years
1
vehicle entries
Official summary
Flash: Integrated Dual Charging Module (IDCM) Enhancements Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following DTCs have been set: ? 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. Customer may also experience the following: ? **Unable to charge t
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.