The Lemon IndexAnother computer in the car received data from the transmission computer 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 transmission computer. Then: network wiring problem; needs a software update.
Owners named U0402 in 32 complaints to the U.S. government, most often on the Jeep Cherokee.
Models that report it most
Complaints that name U0402, by model. Raw counts, not a failure rate: popular models get more complaints. Tap a model for its years, mileage and what owners say fixed it.
U0402 by model: U0402 Jeep Cherokee (11)
Years owners report it on most: 2014 Jeep Cherokee · 2015 Jeep Cherokee · 2016 Honda HR-V · 2022 Jeep Wrangler
The details
What U0402 means
Another computer in the car received data from the transmission computer that did not make sense.
Can I drive with U0402?
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 U0402 also say the car warning lights and electrical faults. A complaint can describe more than one problem, so this doesn't prove the code caused it.
Common causes of U0402
- A fault inside the transmission computer
- 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
- Warning lights and electrical faults: 38% of complaints
- Brakes or ABS act up: 22% of complaints
- Loses power or goes into limp mode: 12% of complaints
- Transmission slips or shifts hard: 12% of complaints
Share of complaints naming the code whose text also mentions each problem.
Model years that report U0402 most
2014 Jeep Cherokee (6), 2015 Jeep Cherokee (4), 2016 Honda HR-V (2), 2022 Jeep Wrangler (2).
Related codes
U0401 U0403 U0404 U0415 U0416 U0418 U0420 U0422
Quick answers
What does U0402 mean?
Invalid Data Received From TCM. Another computer in the car received data from the transmission computer that did not make sense.
Can I drive with U0402?
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 U0402?
A fault inside the transmission computer; Network wiring problem; Needs a software update; Weak battery.
Counts: NHTSA owner complaints whose text names U0402. 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.