{"nhtsa_id":10180276,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-09-28","date":"2020-08-26","document_id":"18-067-20","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING","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 Diagnostic Trouble Codes (DTCs) have been set:P0133-00 - O2 Sensor 1/1 Slow Response. P20EE-00 - SCR NOX Catalyst Efficiency Below Threshold Bank 1. P050E-00 - Cold Start Engine Exhaust Temperature Too Low. P0299 - Turbocharger Underboost Condition. The following software enhancement is available:Calibration to correct the On-Board Diagnostic (OBD) system?s inability to detect and set DTCP0420 - Catalyst Efficiency (Bank 1)when the Diesel Oxidation Catalyst (DOC) is missing.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10180276-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10180276-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10180276","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"},{"id":"transmission-control-module","name":"Transmission control module","parent":"powertrain"}],"codes":["P0133","P0299","P050E","P20EE"],"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":[]}