{"nhtsa_id":10198454,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-06-28","date":"2021-05-22","document_id":"18-050-21","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; POWER TRAIN","mfr_system":null,"summary":"Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P0133 - O2 Sensor 1/1 Slow Response. P0153 - O2 Sensor 2/1 Slow Response. P0171 - Fuel System 1/1 Lean. P0174 - Fuel System 2/1 Lean. P0300 - Multiple Cylinder Misfire. P0301 - Cylinder 1 Misfire. P0302 - Cylinder 2 Misfire. P0303 - Cylinder 3 Misfire. P0304 - Cylinder 4 Misfire. P0305 - Cylinder 5 Misfire. P0306 - Cylinder 6 Misfire. P0307 - Cylinder 7 Misfire. P0308 - Cylinder 8 Misfire. B2286 - Calibration Not Learned / Lost Calibration. The customer may also experience one or more of the following:Hesitation feel during a pedal tip in, while engine is warming up below -1 °C (30 °F) ambient temp. During a 2 - 3 transmission upshift, the engine is hitting rev limit. ?Service Suspension? message in Instrument Panel Cluster (IPC) on start up.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10198454-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10198454-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10198454","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["B2286","P0133","P0153","P0171","P0174","P0300","P0301","P0302","P0303","P0304","P0305","P0306","P0307","P0308"],"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":[]}