November 20, 2020 Service bulletin

Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the...

Jeep technical service bulletin 18-105-20 for 2020 Jeep Cherokee.

Bulletin number: 18-105-20
Component: Power train: automatic transmission
Summary: Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer 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):P20EE-00 - SCR NOx Catalyst Efficiency Below Threshold Bank 1 Catalyst 1. P24B2-00 - Particulate Matter Sensor Circuit Intermittent. Customers may also describe the following condition:Engine Start/Stop inoperative after previous software update. Remote start inoperative(South Korea vehicles only). Incorrect vehicle speed reported by the cluster when the driver changes the speed units. Undesirable pedal response in 4-LO mode. Selective Catalytic Reduction (SCR) system fault codes logged at higher vehicle speeds. Alternator load protection at idle. Check Engine Lamp or low battery indicator

Owners of these vehicles have filed 201 complaints in the transmission category.

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