Jeep Grand Wagoneer 2024 — technical service bulletin
Bulletin 08-231-24 · NHTSA communication 11010255 · issued Nov 1, 2024
Technical service bulletin
communication type
Electrical System
component
2024
model years
2
vehicle entries
Official summary
"Flash: Hybrid Control Processor (HCP) and Auxiliary Hybrid Control Processor (AHCP) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0C19 - Drive Motor A Torque Delivered Performance. ● P1B03 - Resolver Signal / MCPA Rationality. ● B273C - Digital Crash Input. Customers may experience the following: ● Intermittent Wrench (service HV) Condition. This bulletin involves reprogramming the HCP/AHCP, also known as Power Inverter Module (PIM), with the latest available s
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.