Update Chrysler to Get Rid of Stubborn DTC

This bulletin applies to 2012 Chrysler Grand Voyager and Town and Country vehicles equipped with a 3.6L engine and built before June 25, 2012. With the MIL on, the technician may find DTC P0108 (manifold absolute pressure sensor circuit high) has been set active or stored. Apparently, updating the software will correct the concern.

Information courtesy of Mitchell 1

Mike Mavrigian

Jan. 25, 2023

Using a scan tool (wiTECH) with diagnostic procedures available in TechCONNECT, first verify that all engine systems are functioning properly. If DTCs other than P0108 are present, record and address as needed before updating.

Perform a reflash in the normal manner to prevent battery voltage from dropping below 13.2 volts or climbing above 13.5 volts, and reprogram the PCM with the latest software. Type the necessary information on an authorized modifications label and attach it near the VECI label.

About the Author

Information courtesy of Mitchell 1

Information for Technical Service Bulletins comes from ProDemand, Mitchell 1's auto repair information software for domestic and import vehicles. Headquartered in San Diego, Mitchell 1 has provided quality repair information solutions to the automotive industry since 1918.

Mike Mavrigian

Motor Age Editor

Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.