{"nhtsa_id":11032654,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-05-13","date":"2026-05-05","document_id":"18-053-26","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code (DTC): ● P219A - Bank 1 Air-Fuel Ratio Imbalance Bank 1. Customers may also comment on the following: ● **Potential under run or stall when the vehicle utilizes the Trailer Reverse Steering Control feature and is connected to a trailer attempting to backup.** This bulletin involves reprogramming the PCM with the latest available software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11032654-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11032654-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11032654","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":["P219A"],"topics":[],"vehicles":[{"make":"RAM","model":"1500","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_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":[]}