{"nhtsa_id":10220091,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-09-15","date":"2019-11-07","document_id":"1809419","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 one or more of the following (DTCs) have been set:P06EF - Engine Restart Performance. P0456 - EVAP System Small Leak.If DTC P0456 is present use the wiTECH Small Leak Verification test (SLVT) to determine if a leak is present in the system. 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. In addition, customers may experience the following condition:Engine will auto stop and will not auto restart or the engine will auto start and this will result in a misfire, requiring customer to shift into park and manually restart vehicle. Other enhancements included in this update:Improvement for Engine Stop/Start (ESS) System.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10220091-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10220091-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10220091","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["P0300","P0301","P0302","P0303","P0304","P0305","P0306","P0456","P06EF"],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2018,"year_to":2018,"match":"exact","vehicle_ids":["2018_jeep_grand-cherokee"]}],"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":[]}