JEEP

18-041-21

2021-04-29 · NHTSA 10194075

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer summary

Original wording in English

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: P0563-00 - System Voltage High (M6 Vehicles only). P21CC-00 - Reductant Control Module Supply Voltage High (M6 Vehicles only). P20F6-00 - Reductant Injection Valve Stuck Open Bank 1 Unit 1. P208E-00 - Reductant Injector Stuck Closed - Bank 1 Unit 1. P24B2-00 - Particulate Matter Sensor Circuit Intermittent. P00C0-00 - Turbocharger-Supercharger Bypass Valve 2 Control Circuit. Additional customer concerns:Engine Stop/Start (ESS) not functioning properly. Four wheel drive not functioning. Additional enhancement included in this software:Improvement for the auxiliary coolant pump to help prevent stuck injection valve. Calibration update for proper engine operation.

Repeated filings are grouped only when make, bulletin number, publication date and complete summary agree. Original record numbers are retained. Older publications remain available, and an explicit later version is shown when established. Pre-1994 vehicle associations are separated from default results; an unspecified year does not mean all model years apply.