Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp...

Bulletin number

18-031-25 REV. A

Component

Electrical system

Summary

Flash: Powertrain Control Module (PCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P00C6-00 - Fuel Rail Pressure Too Low - Engine Cranking. ● P0325-00 - Knock/Combustion Vibration Sensor 1 Circuit. ● P0330-00 - Knock/Combustion Vibration Sensor 2 Circuit. ● P032A-00 - Knock-Combustion Vibration Sensor C Circuit. ● P018B-00 - Fuel Pressure Sensor "B" Circuit Range/performance. ● P2AF6-00 - Starter Relay 3 Stuck Off. ● P1CEA-00 - Boost Side EVAP Purge System Performance. ● U0104-00 - Lost Communication With Cruise Control Module and U0405 - Invalid Data Received From Cruise Control Module may also be set. This software flash will allow these permanent fault codes to naturally clear. Customers may experience the following: ● A potential to stall when coming to a stop with an immediate restart. If the engine were to stall while stopping, a message would display in the Instrument Panel Cluster (IPC) informing the driver to shift to park to restart the engine. Other software improvements: ● High pressure fuel pump actuation during cold start have been changed to shorten the cranking phase. ● Improvements related to fault codes P0300, P0301, P0302, P0303, P0304, P0305 and P0306 for cold start catalyst heating misfire. This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.

Owners of these vehicles have filed 199 complaints in the electrical category.