The Lemon IndexThe other computers in the car stopped hearing from the gear shift module.
Fix soon. Book a shop visit this week. Stop driving if the car slips, shakes, overheats or warns you.
Wiring or connector fault on the data network. Then: power or ground problem at the gear shift module; failed gear shift module.
Owners named U0103 in 15 complaints to the U.S. government, most often on the Jeep Grand Cherokee.
Cars owners report it on
Complaints that name U0103, by model. Raw counts, not a failure rate: popular models get more complaints.
Transmission problems by year: Jeep Grand Cherokee · Dodge Charger · Volkswagen Golf · Chrysler Pacifica
The details
What U0103 means
The other computers in the car stopped hearing from the gear shift module. Features that depend on it can stop working, and several warning lights often come on together.
Can I drive with U0103?
Fix soon. Book a shop visit this week. Stop driving if the car slips, shakes, overheats or warns you.
27% of the owner complaints that name U0103 also say the car loses power or goes into limp mode. A complaint can describe more than one problem, so this doesn't prove the code caused it.
Common causes of U0103
- Wiring or connector fault on the data network
- Power or ground problem at the gear shift module
- Failed gear shift module
- Weak battery
A shop should confirm the cause with a scan and tests before replacing parts.
What owners describe
- Loses power or goes into limp mode: 27% of complaints
- Warning lights and electrical faults: 27% of complaints
- Stalls or shuts off: 20% of complaints
- Brakes or ABS act up: 13% of complaints
Share of complaints naming the code whose text also mentions each problem.
Related codes
U0102 U0104 U0101 U0100 U0109 U0111 U0121 U0122
Quick answers
What does U0103 mean?
Lost Communication With Gear Shift Module. The other computers in the car stopped hearing from the gear shift module. Features that depend on it can stop working, and several warning lights often come on together.
Can I drive with U0103?
Fix soon. Book a shop visit this week. Stop driving if the car slips, shakes, overheats or warns you.
What causes U0103?
Wiring or connector fault on the data network; Power or ground problem at the gear shift module; Failed gear shift module; Weak battery.
Counts: NHTSA owner complaints whose text names U0103. A complaint is an owner's report, not a diagnosis. Meanings: the standard SAE J2012 definitions in our own words; manufacturer codes only where verified for that make. General information, not repair advice for your car.