{"nhtsa_id":11029751,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-03-05","date":"2026-02-28","document_id":"08-086-26","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Flash: Auxiliary Hybrid Control Processor (AHCP) / 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): ● P0E15-00 - Hybrid-EV Battery Pack Coolant Heater A Control Performance. ● P29BB-00 - Hybrid-EV Battery Pack Coolant Heater A Control Performance. Customers may also comment on one or more of the following: ● Vehicle does not start / engine does not crank. ● Extended engine cranking time when starting the vehicle. ● Loss of heat from the engine. This bulletin involves reprogramming the AHCP and then the HCP with the latest available software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11029751-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11029751-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11029751","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":["P0E15","P29BB"],"topics":[],"vehicles":[{"make":"CHRYSLER","model":"PACIFICA PLUG-IN HYBRID","year_from":2023,"year_to":2023,"match":"base","vehicle_ids":["2023_chrysler_pacifica"]}],"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":[]}