{"nhtsa_id":11007849,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-09-17","date":"2024-09-14","document_id":"18-070-24","mfr_campaign":null,"replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":"Powertrain Control Module","summary":"\"Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician must find one or more of the following Diagnostic Trouble Codes (DTC)s have been set: ● P0629 - Fuel Pump Control Circuit High. ● P0171 - Fuel system Lean. ● P0087 - Fuel Rail Pressure Too Low - Bank 1. Customers may also experience the following: ● Vehicle will not start. ● The Instrument Cluster Panel (ICP) unable to calculate the instantaneous fuel economy under heavy acceleration. ● The oxygen sensor can give incorrect values when entering EV mode. False fault detection (MIL on) is possible when this event occurs. ● The rear half shafts are damaged due to accelerating in drive with the Electronic Parking Brake (EPB) applied. This bulletin involves updating the PCM with the latest available software.\"","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11007849-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11007849-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11007849","components":[],"codes":["P0087","P0171","P0629"],"topics":[],"vehicles":[{"make":"JEEP","model":"GRAND CHEROKEE","year_from":2023,"year_to":2023,"match":"exact","vehicle_ids":["2023_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":[]}