JEEP

18-085-17

2017-09-19 · NHTSA 10121801

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 Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, the technician may find the following DTCs set in the PCM memory:P1D83 - Implausible Engine Oil Temperature Signal Received (Software has been updated to better address this DTC). U1504 - Implausible Message Data Length Received From Steering Angle Sensor. U1424 - Implausible Engine Torque Signal Received. P0456 - EVAP System Small Leak. P0335 - Crankshaft Position Sensor Circuit. U0402 - Implausible Data Received From TCM - (Transmission Control Module). B10EA - Blower Motor Control Circuit High. B10E9 - Blower Motor Control Circuit Low. P0441 - EVAP Purge System Performance. P0116 - Engine Coolant Temperature Sensor Performance. P2067 - Fuel Level Sensor 2 Circuit Low (International Only). In addition the customer may notice one of the following conditions:A push/bump feeling when the transmission is downshifting from eighth to seventh gear. Vehicle shudder at stop/start with A/C on. Software enhancement also includes:Calibration update to allow the throttle body to be cycled while the engine is off, for diagnostic purposes.

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.