The Lemon IndexU3000 is a manufacturer-specific code, so its exact meaning depends on the make. Full U3000 page
51 owner complaints · the #1 code Honda Odyssey owners name · 19% of Honda Odyssey complaints that name a code (every car: 1.5%)
2018–2025 Honda Odyssey · most: 2019 (20), 2020 (16), 2018 (14)
Honda Odyssey owners named U3000 in 51 complaints to the U.S. government (NHTSA), most often on the 2019, 2020 and 2018 model years. The part they name most is the engine software (a reflash) (5 complaints). Complaints are owner reports, not proof of a defect.
Honda Odyssey model years that report U3000
Owner complaints naming U3000, by model year. Raw counts: years that sold more get more complaints, so this is each model year's record, not a failure rate.
What owners say caused it or fixed it
The most-named part is the engine software (a reflash), in 5 of the 51 complaints (10%). 5 of those mention it being replaced or repaired, and 3 say the problem came back afterwards.
- Software update (reflash)5 complaints5 mention a repair or replacement, 3 of them say the problem came back
8 complaints mention a recall and 3 mention a warranty.
Counted from the owners' own words: a part counts when a sentence names it with a cause or repair word. What owners wrote, not a diagnosis. A shop should confirm the cause before replacing parts.
Symptoms owners describe with U3000
2% of these complaints say the check engine light came on.
- Brakes or ABS act up29%15 of 51 complaints
- Warning lights and electrical faults24%12 of 51 complaints
- Overheats6%3 of 51 complaints
- Stalls or shuts off4%2 of 51 complaints
Share of the complaints naming U3000 whose text also describes each problem. A complaint can describe more than one.
Recalls on these Honda Odyssey years
- Electrical · 2019, 2020 · issued 2020
Incorrect central network software programming may cause several errors to occur that can delay or prevent the rearview camera image from displaying. NHTSA 20V440000 - Electrical · 2018, 2019, 2020 · issued 2020
The wire harness for the third row seat accessory power outlet may get pinched between the unibody and rear trim panel, possibly damaging the wires and causing an electrical short. NHTSA 20V066000
2 recalls for the same systems (electrical) on the Honda Odyssey model years above. A recall for the same system isn't proof it's behind U3000. Recall work is free at any dealer: check a VIN at nhtsa.gov/recalls or with our VIN check.
Keep going
- U3000: meaning, causes and every car that reports it
- Honda Odyssey reliability by year
- 2019 Honda Odyssey problems and recalls
Other codes Honda Odyssey owners report
P0740 P0730 P0301 P0304 P0303 P219A P0302 P0420 P3400 P3497
U3000 on other cars
Ford Fusion (24) · Ford Explorer (23) · Honda Pilot (20) · Ford Escape (15) · Acura MDX (11) · Honda Passport (11)
The details
How we count
We read every owner complaint in the NHTSA file whose text names this trouble code, and count the ones filed about this model (matched by the make, model and model year on the complaint). Mileage is what the owner entered on the form.
Parts: a complaint counts for a part when one of the owner's own sentences names that part together with a cause word (failed, bad, diagnosed, caused by, leaking ...) or a repair word (replaced, repaired, new, reprogrammed ...). "Came back" means the same complaint also says the problem returned or the repair didn't fix it. These are counts of what owners wrote, not a diagnosis, and one complaint can name several parts.
Complaints are reports, not proof of a defect, and most owners never file one. Popular models get more complaints, so the counts are not a failure rate. The code meaning is the standard SAE J2012 definition in our own words, or the carmaker's meaning where we verified it for that make.
What U3000 means
U3000 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 for Honda yet. A dealer or a scanner with the maker's software can tell you exactly.
Check the complaints yourself
NHTSA complaint numbers (search them at nhtsa.gov): 11777469, 11776360, 11773491, 11769357, 11768823, 11768317, 11765360, 11764447, 11763754, 11762747, 11762059, 11761197 and 39 more.
Quick answers
Which Honda Odyssey years have the most U3000 complaints?
In complaints to NHTSA, owners of the 2019 (20), 2020 (16), 2018 (14) Honda Odyssey named U3000 most (51 complaints in all, 2018–2025). Raw counts, not a failure rate.
What fixes U3000 on a Honda Odyssey?
Owners most often name the engine software (a reflash) (5 of 51 complaints). That's what owners wrote, not a diagnosis: have a shop confirm the cause with a scan and tests before replacing parts.
Sources: NHTSA owner complaints that name U3000 on the Honda Odyssey, counted by The Lemon Index; NHTSA recalls; repair bills owners named. Meanings: SAE J2012 in our own words. Owner reports, not a diagnosis or repair advice for your car.