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Service bulletin 08-034-26 REV.A

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11028754
Published by NHTSA2026-02-12
Manufacturer's number08-034-26 REV.A
Manufacturer's date2026-02-06
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

Flash: Battery Pack Control Module (BPCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation SYMPTOM: the technician must find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ● P0B28-00 Hybrid/EV Battery "B" Voltage Unstable. ● P0DAB-00 - Hybrid/EV Cell Balancing Performance. ● P0607-00 - ECU Internal Performance. ● P0AA1-00 - Hybrid/EV Battery Positive Contactor “A” Stuck Closed. ● P0AA4-00 - Hybrid Battery Negative Contactor Circuit 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 Failied. ● P0BBE-00 - Hybrid/EV Battery Pack Voltage Variation. Customers may also comment on the following: ● Vehicle does not start. NOTE: The no start condition is accompanied with one or more of the following DTCs: P0DAB-00, P0607-00, P0AA1-00, P0AA4-00, P0C78-00, P0CA6-00, P0B24-00, P1C5E-00 and/or P0BBE-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.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Electrical system

Trouble codes named

P0607, P0AA1, P0AA4, P0B24, P0B28, P0BBE, P0C78, P0CA6, P0DAB, P1C5E

Vehicles listed
JEEP WRANGLER 4XE2024 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
25V7410002025-10-30. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
25V7100002025-10-17. ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT:POWER CONTROL UNIT/MODULE (HPCU):SOFTWARE
24V8710002024-11-19. EXTERIOR LIGHTING; ELECTRICAL SYSTEM:WIRING
24V7200002024-09-27. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY
24V6520002024-09-05. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
S26080000382026-10-16. Service bulletin. High Voltage Battery Has Lower SOC After Overnight Sleep Cycle
08-355-262026-10-16. Service bulletin. Flash: Drivetrain Control Module (DTCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● C147B-92 - Front Axle Disconnect Sensor Performance or Incorrect Operation Customers may comment on one or more of the following: ● 4WD system warning lights, service messages, or flashing indicators are displayed in the Instrument Panel Cluster (IPC). ● The vehicle does not engage 4WD properly. This bulletin involves reprogramming the DTCM with the latest available software.
S26080000382026-10-16. Service bulletin. High Voltage Battery Has Lower SOC After Overnight Sleep Cycle
08-355-262026-10-16. Service bulletin. Flash: Drivetrain Control Module (DTCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC): ● C147B-92 - Front Axle Disconnect Sensor Performance or Incorrect Operation Customers may comment on one or more of the following: ● 4WD system warning lights, service messages, or flashing indicators are displayed in the Instrument Panel Cluster (IPC). ● The vehicle does not engage 4WD properly. This bulletin involves reprogramming the DTCM with the latest available software.
1147492026-09-30. Service bulletin. CHARGER - BATTERY
S2623000048 REV.A2026-09-17. Service bulletin. Customer States Driver Seat inoperative. Seat Fuse F59 30A Found blown.
91009002026-09-17. Service bulletin. Passive Entry O/S Dr Handle Prior to replacing an inoperative passive entry door handle, perform Star Online S2623000040.
91008722026-08-06. Service bulletin. Display Exchange part has been superseded. Order the latest Z part number: Z8607669AC --> Z8791155AA (Active Exchange Part) Z8607669AD --> Z8791669AA (Active Exchange Part) Z8607669AE --> Z8791156AA (Active Exchange Part) Z8607671AC --> Z8791157AA (Active Exchange Part) Z8607671AD --> Z8791158AA (Active Exchange Part) Z8607671AE --> Z8791159AA (Active Exchange Part)
9100533 Rev 12026-07-18. Service bulletin. DCSD Before replacing this part for a Blank screen, screen flickering or screen inoperative concern, perform a hard reset to the Display and see if concern is resolved. Currently no dealer claims with this issue stating the RVC image is affected. Verify "Z" part number availability. Order a "Z" part number for all Exchange Orders, Warranty, Mopar, Customer Pay and Service Contract. Order "68" part number for New, Unsold units only. Verify "Z" part number availability. Order a "Z" part number for all Exchange Orders, Warranty, Mopar, Customer Pay and Service Contract. Order "68" part number for New, Unsold units only. Exchange Part Number Supersession For Ordering: 68607669AC --> Z8607669AC --> Z8791155AA 68607669AD --> Z8607669AD --> Z8791669AA 68607669AE --> Z8607669AE --> Z8791156AA 68607671AC --> Z8607671AC --> Z8791157AA 68607671AD --> Z8607671AD --> Z8791158AA 68607671AE --> Z8607671AE --> Z8791159AA
S2508000025 REV. B2026-07-08. Service bulletin. Instrument Panel Cluster (IPC) and Radio Compass Display has Dashes (--)