Another computer in the car received data from the gear shift module that did not make sense.
Get it fixed soon. A few more days of normal driving is usually OK, but waiting can turn a small repair into a bigger one or a breakdown.
A fault inside the gear shift module. Then: network wiring problem; needs a software update.
Owners named U0404 in 16 complaints to the U.S. government, most often on the Jeep Grand Cherokee.
Cars owners report it on
Complaints that name U0404, by model. Raw counts, not a failure rate: popular models get more complaints.
Years owners report it on most: 2007 Jeep Grand Cherokee · 2007 Jeep Commander · 2006 Jeep Commander
Transmission problems by year: Jeep Grand Cherokee
The details
What U0404 means
Another computer in the car received data from the gear shift module that did not make sense.
Can I drive with U0404?
Get it fixed soon. A few more days of normal driving is usually OK, but waiting can turn a small repair into a bigger one or a breakdown.
38% of the owner complaints that name U0404 also say the car stalls or shuts off. A complaint can describe more than one problem, so this doesn't prove the code caused it.
Common causes of U0404
- A fault inside the gear shift module
- Network wiring problem
- Needs a software update
- Weak battery
A shop should confirm the cause with a scan and tests before replacing parts.
What owners describe
- Stalls or shuts off: 38% of complaints
- Loses power or goes into limp mode: 31% of complaints
- Warning lights and electrical faults: 12% of complaints
Share of complaints naming the code whose text also mentions each problem.
Model years that report U0404 most
2007 Jeep Grand Cherokee (8), 2007 Jeep Commander (3), 2006 Jeep Commander (2).
Related codes
U0403 U0402 U0401 U0415 U0416 U0418 U0420 U0422
Quick answers
What does U0404 mean?
Invalid Data Received From Gear Shift Control Module "A". Another computer in the car received data from the gear shift module that did not make sense.
Can I drive with U0404?
Get it fixed soon. A few more days of normal driving is usually OK, but waiting can turn a small repair into a bigger one or a breakdown.
What causes U0404?
A fault inside the gear shift module; Network wiring problem; Needs a software update; Weak battery.
Counts: NHTSA owner complaints whose text names U0404. 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.

