{"nhtsa_id":10231804,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-02-13","date":"2023-01-26","document_id":"18-012-23","mfr_campaign":null,"replaces":null,"component":"EXTERIOR LIGHTING; ELECTRICAL SYSTEM; POWER TRAIN","mfr_system":null,"summary":"Flash: Powertrain Control Module (PCM) 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 Code (DTC). U0402-00 - Implausible Data Received From TCM. U145D - Implausible Data Received From TCM On D-PT. Customers may experience one or more of the following: Vehicle may not be able to enter electric mode driving while Fuel Oil Refresh Mode (FORM) is active. FORM staying on too long. Other software enhancement included with this update: On Board Fuel Consumption Monitoring Updates (China Only) This bulletin involves reprogramming the PCM with the latest available software. NOTE: Additional module flashes are required for this update to be effective, the following modules are all to be updated along with this PCM update: Hybrid Control Processor (HCP), Auxiliary Hybrid Control Processor (AHCP) also known as the Power Inverter Module (PIM). Transmission Control Module (TCM). Battery Pack Control Module (BPCM). Integrated Dual Charging Module (IDCM).","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10231804-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10231804-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10231804","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"lighting","name":"Lighting","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["U0402","U145D"],"topics":[],"vehicles":[{"make":"JEEP","model":"WRANGLER","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_jeep_wrangler"]}],"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":[]}