P0730 — Incorrect gear ratio

Code P0730 is a standard OBD-II diagnostic trouble code: Incorrect gear ratio.

In our record, P0730 is reported most often on Dodge, Kia and Honda vehicles , against powertrain and engine failure patterns , across 2009–2020 model years.

In ProblemsByVin's analysis of the NHTSA owner-complaint record, owners cite P0730 across 9 vehicle failure patterns. Diagnostic codes in complaints are reported by owners and are unverified — they point to where this code shows up, not a confirmed diagnosis. Open a page below for the full pattern (symptoms, mileage, repair costs owners cite).

Vehicles where owners report P0730 9 patterns

2020 Kia Forte

powertrain — Transmission fluid degradation and internal failure

2016 Honda Pilot

powertrain — Transmission judder, jerking, and shifting problems

2016 Jeep Patriot

powertrain — Engine stalling without warning

2016 Mitsubishi Outlander

powertrain — CVT transmission belt slipping and premature wear

2013 Chrysler 300

powertrain — Hard shifts, slips, flares, and limp mode—transmission W5A580-NAG1-722.6

2013 Dodge Durango

powertrain — Transmission slipping, hesitation, hard shifts, and gear skipping

2010 Dodge Challenger

powertrain — Stalling without warning (multiple etiologies)

2010 Dodge Caliber

powertrain — CVT Transmission Failure

2009 Dodge Challenger

engine — Engine coughing, shuddering, and gear ratio fault codes during acceleration

Codes are pulled from what owners wrote in their NHTSA filings — they're allegations, not a shop diagnosis. Always confirm with a live scan. Browse all diagnostic codes →