P0730 on Toyota
Incorrect Gear Ratio
P0730 on Toyota vehicles indicates incorrect gear ratio. Au7o has documented this code across 9 Toyota models — most commonly on C-HR, Camry, Corolla. This code means the transmission computer detected that the actual gear ratio (calculated from input vs. output shaft speeds) does not match what it should be for the commanded gear. In other words, the transmission isn't delivering the correct gear, which often shows up as slipping, flaring RPM during shifts, or being stuck in the wrong gear. It can stem from internal mechanical wear, low or contaminated fluid, or faulty solenoids and sensors. The vehicle may shift harshly or enter limp mode. Typical repair costs on Toyota range from $100 to $4,500, depending on the specific model and root cause.
Common Causes of P0730
- •Low or contaminated transmission fluid
- •Worn clutches or bands (internal slipping)
- •Faulty shift solenoids
- •Dirty or sticking valve body
- •Faulty input or output speed sensor
- •Internal hydraulic/line pressure problems
- •Torque converter problems
- •General high-mileage transmission wear
P0730 on Toyota by Model
Toyota C-HR(1 issue)
- CVT Transmission Hesitation and Rubber Band Effect2018-2022
The C-HR's CVT (K120) exhibits noticeable hesitation on acceleration and the typical CVT 'rubber band' effect where engine RPM rises before the vehicle accelerates. The lag between throttle input and forward motion is more pronounced than in competing vehicles.
Toyota Camry(1 issue)
- 8-Speed Transmission Hesitation/Jerking2018-2023
The 8-speed automatic transmission can exhibit hesitation, jerky shifts, or a delayed response when accelerating from a stop. Some owners report the transmission feels confused about which gear to select at low speeds.
Toyota Corolla(1 issue)
- CVT Transmission Shudder and Failure2014-2019
The Continuously Variable Transmission (CVT) in 2014-2019 Corollas may experience shuddering, jerking during acceleration, high RPM before shifting, and in severe cases complete transmission failure. Issues are particularly reported when accelerating from a stop or during downshifting. Some owners have experienced catastrophic failures at relatively low mileage.
Toyota Corolla Cross(1 issue)
- CVT Hesitation and Delayed Acceleration Response2022-2026
The Direct Shift CVT in the Corolla Cross can exhibit hesitation and delayed response during initial acceleration from a stop or when requesting sudden power during passing maneuvers. The CVT programming prioritizes fuel economy, resulting in a noticeable delay between throttle input and vehicle response. Toyota has issued software updates to improve throttle response in some model years. The issue is more pronounced in non-hybrid models with the 2.0L engine.
Toyota GR Corolla(1 issue)
- iMT Rev-Match System Interference and Shift Feel2023-2025
The intelligent Manual Transmission (iMT) rev-match system can interfere with smooth shifting, causing unexpected RPM blips and a disconnected shift feel. The system sometimes over-revs or under-revs during downshifts, and the clutch pedal feel is reported as vague.
Toyota GR86(1 issue)
- Manual Transmission Throw-Out Bearing Noise2022-2025
GR86 models with the 6-speed manual develop throw-out bearing noise, typically a chirping or squealing sound when the clutch pedal is depressed or released. The bearing wears prematurely, especially in stop-and-go traffic. Not an immediate failure risk but worsens over time.
Toyota RAV4(1 issue)
- Transmission Hesitation and Lurching at Low Speeds2019-2023
The vehicle hesitates and lurches when accelerating from a slow or rolling stop, particularly at traffic lights or in stop-and-go traffic. The magnetic clutch in the Direct Shift-CVT transmission causes delayed engagement. A class action investigation is ongoing for 2021-2023 models.
Toyota Supra(1 issue)
- ZF 8HP Transmission Rough Low-Speed Shifts2020-2025
The ZF 8HP51 automatic transmission exhibits rough or jerky shifts at low speeds, particularly 1st-to-2nd and 2nd-to-3rd gear changes during city driving. The mechatronic unit's valve body can develop wear causing harsh engagement. Cold weather worsens symptoms.
Toyota Tacoma(1 issue)
- Manual Transmission Grinding/Notchy Shifts2016-2023
The 6-speed manual transmission can exhibit grinding when shifting, particularly into 2nd or 3rd gear, and generally notchy shift feel. This is often related to the synchros or the clutch system hydraulics.
Looking for P0730 on a different make?
View P0730 across all makes →Frequently Asked Questions
What does P0730 mean on Toyota?▼
P0730 stands for "Incorrect Gear Ratio." This code means the transmission computer detected that the actual gear ratio (calculated from input vs. output shaft speeds) does not match what it should be for the commanded gear. In other words, the transmission isn't delivering the correct gear, which often shows up as slipping, flaring RPM during shifts, or being stuck in the wrong gear. It can stem from internal mechanical wear, low or contaminated fluid, or faulty solenoids and sensors. The vehicle may shift harshly or enter limp mode. On Toyota specifically, this code is documented across 9 models.
What causes P0730 on Toyota vehicles?▼
Common causes on Toyota: Low or contaminated transmission fluid, Worn clutches or bands (internal slipping), Faulty shift solenoids, Dirty or sticking valve body, Faulty input or output speed sensor. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0730 on a Toyota?▼
Repair costs on Toyota range from $100 to $4,500, depending on the specific model and root cause.
Which Toyota models have P0730 documented?▼
Au7o has documented P0730 on 9 Toyota models: C-HR, Camry, Corolla, Corolla Cross, GR Corolla, GR86, RAV4, Supra, Tacoma.