Technical Service Bulletin 08-038-26 — 2022 JEEP WRANGLER 4XE

Flash: Battery Pack Control Module (BPCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0B28-00 - Hybrid/EV Battery “B” Voltage Unstable. ● P0BBE-00 - Hybrid/EV Battery Pack Voltage Variation. ● P0AA1-00 - Hybrid/EV Battery Positive Contactor “A” Stuck Closed. ● P0C78-00 - Hybrid/EV Battery System Precharge Time Too Long. ● P0CA6-00 - Hybrid/EV Battery Charging Current High. ● P0B24-00 - Hybrid/EV Battery "A" Voltage Unstable. ● P1C5E-00 - Hybrid/EV Battery State Of Health Failed. ● P0DAB-00 - Hybrid/EV Cell Balancing Performance. ● P0607-00 - ECU Internal Performance.** **Customers may also comment on the following: ● Vehicle does not start. NOTE: The no start condition is accompanied with the following DTCs: P0DAB-00, P0607-00, P0AA1-00, P0AA4-00, P0C78-00, P0CA6-00, P0B24-00 and/or P1C5E-00. P0B28-00 will result in a MIL for 49 days. After 49 days of the MIL, the vehicle will no longer be allowed to start.** This bulletin involves reprogramming the BPCM with the latest available software. NOTE: Additional module flashes are required for this update to be effective, the following modules