{"nhtsa_id":10188820,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-03-15","date":"2021-02-17","document_id":"18-022-21","mfr_campaign":null,"replaces":null,"component":"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 DTCs have been set: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. The customer may also experience one or more of the following:Rough idle/misfire only after cold start Auto Park system is unable to be manually over-ridden after an Auto Park event. Auto Park disabled message will not display in cluster. ECO light does not illuminate in the cluster when Multiple Displacement System (MDS) is active(EMEA, LATAM and APAC). 2-3 kph (1.3-1.9 mph) difference between cruise set speed and the actual vehicle speed(EMEA, LATAM and APAC). Bump sensation during a coast down with light acceleration. Abnormal vibration when accelerating lightly during stop and go driving conditions.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10188820-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10188820-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10188820","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["P0300","P0301","P0302","P0303","P0304","P0305","P0306","P0307","P0308"],"topics":[],"vehicles":[{"make":"RAM","model":"1500","year_from":2020,"year_to":2020,"match":"exact","vehicle_ids":["2020_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":[]}