U0103 — Lost communication with the gear shift module

Code U0103 is a standard OBD-II diagnostic trouble code: Lost communication with the gear shift module.

In our record, U0103 is reported most often on Dodge, Jeep and Chrysler vehicles , against powertrain and electrical failure patterns , across 2005–2018 model years.

In ProblemsByVin's analysis of the NHTSA owner-complaint record, owners cite U0103 across 6 vehicle failure patterns. Diagnostic codes in complaints are reported by owners and are unverified — they point to where this code shows up, not a confirmed diagnosis. Open a page below for the full pattern (symptoms, mileage, repair costs owners cite).

Vehicles where owners report U0103 6 patterns

2018 Chrysler Pacifica

powertrain — Transmission failure and harsh shifting

2015 Mercedes-Benz C-Class

powertrain — Shift module communication loss and gear selection failure

2009 Dodge Charger

electrical — Shift lever and transmission electrical control failure

2007 Jeep Grand Cherokee

engine — Engine stalling—random, without warning

2006 Dodge Charger

cruise control — Post-refuel stalling

2005 Jeep Grand Cherokee

powertrain — Transmission Delayed Engagement and Gear Selection Issues

Codes are pulled from what owners wrote in their NHTSA filings — they're allegations, not a shop diagnosis. Always confirm with a live scan. Browse all diagnostic codes →