{"nhtsa_id":10231802,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-02-13","date":"2023-01-26","document_id":"08-025-23","mfr_campaign":null,"replaces":null,"component":"EXTERIOR LIGHTING; POWER TRAIN; ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"Flash: Hybrid Control Processor (HCP) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P1C64 - Hybrid Perf Engine Speed Below Target During Autostart. U0402 - Implausible Data Received From TCM. Customers may also comment on one or more of the following: During an Engine Stop/Start (ESS) event, the autostart fails and the AutoPark engages. Transmission is in Limp Mode. This bulletin involves updating the HCP with the latest available software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10231802-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10231802-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10231802","components":[{"id":"engine","name":"Engine","parent":null},{"id":"lighting","name":"Lighting","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["P1C64","U0402"],"topics":[],"vehicles":[{"make":"RAM","model":"1500","year_from":2022,"year_to":2022,"match":"exact","vehicle_ids":["2022_ram_1500"]}],"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":[]}