{"nhtsa_id":11034897,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-07-08","date":"2026-07-03","document_id":"08-259-26","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"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 ● B22A9-42 - ECU Internal Performance-general Memory Failure.** ● 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. ● B22A9-92 - ECU Internal Performance - Performance Or Incorrect Operation. Customer may also experience the following: ● 12 volt battery drain. ● Vehicle will not charge. This bulletin involves reprogramming the IDCM with the latest software available.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11034897-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11034897-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11034897","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":["B22A9","P0D21"],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND CHEROKEE 4XE","year_from":2022,"year_to":2022,"match":"base","vehicle_ids":["2022_jeep_grand-cherokee"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}