The Lemon IndexU3003 is a manufacturer-specific code, so its exact meaning depends on the make.
Depends on what it means on your make. Get it read before a long drive.
Have a shop read it with the maker's own scan tool first.
Owners named U3003 in 26 complaints to the U.S. government, most often on the Honda Accord.
Cars owners report it on
Complaints that name U3003, by model. Raw counts, not a failure rate: popular models get more complaints.
Years owners report it on most: 2018 Honda Accord · 2014 Ford Focus · 2019 Ford Ranger · 2018 Mazda3
The details
What U3003 means
U3003 is a manufacturer-specific code: each carmaker decides what it means, so the same code can point to different problems on different brands. We haven't verified its meaning yet. A dealer or a scanner with the maker's software can tell you exactly what it means on your car.
Owners who reported it drive: Ford (12), Honda (8), Mazda (4), Lincoln (1).
What owners describe
- Warning lights and electrical faults: 73% of complaints
- Brakes or ABS act up: 58% of complaints
- Loses power or goes into limp mode: 12% of complaints
- Won't start or hard to start: 8% of complaints
Share of complaints naming the code whose text also mentions each problem.
Model years that report U3003 most
2018 Honda Accord (5), 2014 Ford Focus (2), 2019 Ford Ranger (2), 2018 Mazda3 (2).
Related codes
Counts: NHTSA owner complaints whose text names U3003. 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.