P0730 on Honda vehicles
59 owner complaints filed with NHTSA about Honda vehicles mention P0730 (Incorrect Gear Ratio) - across 5 models. Below is where it shows up, by model and year.
Can you drive with it? Only gently and locally - incorrect ratios often mean internal slipping, and continued driving grinds up expensive parts.
Symptoms, likely causes in order and realistic repair costs are on the main P0730 page - they do not differ much by brand. This page shows what is specific to Honda: which models and years actually report it.
Honda models reporting P0730
The number next to each year is how many NHTSA complaints for that car mention P0730. Owners rarely quote trouble codes when complaining, so real occurrence is many times higher - use these numbers to compare years, not as totals.
What Honda owners report
“Our vehicle experienced total transmission failure with no warning while I was driving on a narrow country road. The car shifted into neutral, and I was unable to go anywhere, so I sat in the middle of the road with hazard lights on in a state of panic. We had the car towed to a nearby Honda dealership and were informed of the transmission failure, which was identified through a diagnostic test. Codes that failed were listed as: P0730; P0700; P07A6; P07A8; P07A4. I have owned the car for one year and three months (purchased October 2024 for $34,000). I am being told it is just past the power train warranty, and Honda is not offering any assistance in covering the repair cost - $10,000.”2022 Honda Passport · Jan 2026
“Transmission - car died on the highway. Had it towed to the mechanic. Service code that appeared was p0730, and I need a new transmission. Car has 140k on it, is a 2002 honda civic, I'm the only owner, and I have serviced this car completely by the book. I just spent $1200 for the timing belt and water pump last month as a preventive measure, $150 on the battery in jan 2017, tires <7k miles ago, brakes last nov, and now a $5000 estimate given to me by the dealership in order for them to replace the transmission.”2002 Honda Civic · Mar 2018 · 140,000 mi
“Submission from constituent re recall 04-021:c "automatic transmission recall for honda odyssey 2003" (full document not imaged). *smd the consumer stated according to an emission testing center, there was a problem with the transmission, the computer gave two codes, p0730 and p1750. The consumer was informed, the transmission recall, was performed on her vehicle in the past. However, the problem has since returned. *jb”2003 Honda Odyssey · Oct 2014
Counts are NHTSA owner complaints whose text mentions P0730 - owner-reported and unverified. Always confirm with a diagnosis of your specific vehicle.