P0730: Incorrect Gear Ratio
133 vehicles · 25 makes · $5-$20,000 repair
Most Reported On
P0730 is an OBD-II diagnostic trouble code meaning “Incorrect Gear Ratio.” The transmission is not achieving the expected gear ratio. Usually indicates internal transmission problems like worn clutch packs or bands. This code is most commonly reported on 2012-2018 Ford Focus, 2015-2023 Ford Mustang (EcoBoost, GT, Bullitt, Mach 1), and 2013-2023 Nissan Altima, plus 130 other vehicles, with repair costs ranging from $5 to $20,000.
Common Causes
Typical Repair Cost
Based on 150 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P0730, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.
Vehicles Affected (133)
Automatic Transmission 3rd Gear Failure
9-Speed Automatic Transmission Shudder and Harsh Shifting
1999 3.2TL 5-speed auto was the start of the famous Acura V6 transmission failures
3.0CL automatic transmission slips and fails — flush is forbidden, filter is not serviceable
S-Tronic DSG Transmission Issues (Mk2)
ZF 6HP26 Automatic Transmission Torque Converter Shudder and Failure
Automatic Transmission Harsh Shifting
CVT Multitronic Transmission Failure and PRNDS Flashing on Front-Wheel-Drive A4
Multitronic CVT Transmission Failure
Multitronic CVT Transmission Failure
Transfer Case Actuator Motor Failure
Transfer Case Actuator Motor Failure
DCT (M-DCT) Mechatronics Unit Failure
Transfer Case Actuator Motor Failure
xDrive Transfer Case Stress & Fluid Degradation - F97 X3 M / F98 X4 M
Automatic Transmission No-Reverse / Failsafe Due to ZF 5HP19 Drum and Valve Body Wear
DCT Dual-Clutch Transmission Wear & Judder - F10 M5
xDrive Transfer Case Stress & Fluid Degradation - F98 X4 M / F98 X4 M
Aisin 8-Speed Transmission Jerking
Transfer Case Failure - xDrive Models E84/F48 X1
SMG Hydraulic Pump and Clutch Actuator Failure
SMG III Hydraulic Pump Failure - E60 M5
DCT Dual-Clutch Transmission Shudder & Clutch Wear - F82/F83 M4
ZF 6HP Transmission Mechatronic Sleeve & Valve Body Failure
SMG III Hydraulic Pump Failure (M6 and SMG-Equipped 645Ci/650i)
Transfer Case Actuator Motor Failure (All xDrive Models)
ZF 8HP Transmission Mechatronic Issues (All 8 Series & M8)
xDrive Transfer Case Actuator Motor Failure - E70/F85/F95 X5 M
DCT Dual-Clutch Transmission Shudder & Clutch Wear - F87 M2/M2C
Transfer Case Actuator Motor Failure (xDrive AWD System)
Jatco CVT Overheating and Premature Failure
C635 Dual-Dry-Clutch Transmission (DDCT) Failure
W5A580 (NAG1) 5-Speed Transmission Water Contamination
Transmission Fluid Expulsion and Fire Risk - Recall
DCT Transmission Hesitation from Stop
DPS6 PowerShift Dual-Clutch Transmission Shudder, Hesitation, and Failure
MT82 Manual Transmission Grinding and Shifting Issues
Power Transfer Unit (PTU) Fluid Leak and Failure - AWD Models
Hybrid eCVT Transmission Shudder and Delayed Engagement
7-Speed Manual Transmission Grinding/Scraping Noise
8F35 Transmission Shudder/Buck/Jerk Below 35 mph and Output Carrier Bearing Wear (Early 2022 Builds)
CVT Transmission Shudder and Jerking (2020+ Hybrid)
Automatic Transmission Complete Failure (2nd Gen)
ZF 9-Speed Transmission Rough Shifting, Shudder, and Hesitation (2.0T)
ZF 9-Speed Transmission Rough Shifting and Hesitation
CVT Start Clutch Juddering
CVT Transmission Problems (3rd Gen)
Automatic Transmission 2nd-Gear Overheating and Torque Converter Failure
CVT Transmission Shuddering and Judder
CVT Transmission Judder and Failure (Second Gen)
7-Speed DCT Transmission Shudder and Hesitation
Dual-Clutch Transmission (DCT) Shudder/Hesitation
7-Speed DCT Shudder and Delayed Engagement
6-Speed DCT Premature Clutch Failure
Dual Clutch Transmission (DCT) Shudder and Failure
IVT/CVT Transmission Failure and Power Loss
Concentric Slave Cylinder Failure (Manual Transmission)
IVT/CVT Transmission Failure and Shudder
8-Speed DCT Overheating Under Load / Towing
6-Speed DCT Harsh Shifting, Shuddering, and Hesitation
Smartstream IVT/CVT Hesitation, Judder, and Limp-Mode from Transmission Control Logic or Internal Faults
IVT (CVT) Judder and Hesitation
ZF 8HP Transmission Valve Body Malfunction
ZF 8HP Mechatronic Unit Failure
Automatic Transmission Valve Body Wear
ZF 8HP Harsh Shifting and Hesitation
9-Speed Automatic Transmission Harsh Shifting
ZF 8HP Valve Body Wear
Jatco CVT Transmission Overheating / Failure
9-Speed Automatic Transmission Rough Shifting
Jatco CVT Transmission Failure / Overheating
Transmission Overheating / Control Module Failure
Manual Transmission Clutch Issues (JL)
Manual Transmission Clutch Overheating / Fire Risk
Automatic Transmission Stalling / Auto-Park Engagement
ZF 8-speed (8HP) harsh shifting / delayed engagement (software/adaptation issues)
Dual-Clutch Transmission Judder (Hybrid)
CVT Shudder and Hesitation Under Acceleration
7-Speed DCT Transmission Clutch Judder
8-Speed DCT Harsh Shifting and Delayed Response
DCT Transmission Oil Pump Failure (2.5T)
8-Speed DCT Electric Oil Pump Failure
CVT Hesitation and Jerking Under Load
6-Speed Automatic Transmission Hesitation and Hard Downshift
Transmission Control Unit (TCU) Software Fault Causing Harsh Upshifts or Limp Mode (8-Speed AT)
CVT/IVT Hesitation, Jerking, and Delayed Engagement at Low Speed
CVT Transmission Failure/Shudder
CVT Transmission Failure/Shudder
CVT Transmission Failure (Jatco CVT7/JF015E)
CVT Transmission Failure (Jatco CVT7/JF015E)
CVT Transmission Failure (Jatco CVT8/JF016E)
CVT Transmission Failure and Shudder
CVT Transmission Shudder and Failure (Jatco CVT8)
GR6 Dual-Clutch Transmission Judder and Failure
CVT Transmission Failure (Jatco CVT7)
Manual Transmission Synchro Wear (2nd/3rd)
CVT Transmission Failure Under Load
CVT Overheating During Highway Driving
Excessive Engine Noise and Vibration (HR16DE)
CVT Transmission Shudder and Premature Failure
9-Speed Automatic Harsh Shifting, Shift Shock, and Delayed Engagement
CVT Transmission Shudder and Premature Failure
CVT Transmission Shudder/Hesitation
CVT Transmission Hesitation and Harsh Engagement
CVT Chain Stretch and Transmission Judder
CVT Transmission Failure
Throw-Out Bearing Chirp/Failure
Throwout Bearing Noise and Premature Failure
CVT Transmission Failure and Harsh Engagement
CVT Valve Body Failure and Transmission Warning
Transmission Hesitation and Lurching at Low Speeds
Manual Transmission Grinding/Notchy Shifts
CVT Transmission Shudder and Failure
ZF 8HP Transmission Rough Low-Speed Shifts
CVT Transmission Hesitation and Rubber Band Effect
8-Speed Transmission Hesitation/Jerking
Manual Transmission Throw-Out Bearing Noise
iMT Rev-Match System Interference and Shift Feel
CVT Hesitation and Delayed Acceleration Response
DSG (DQ250/DQ381) Mechatronic Unit and Clutch Pack Failure
DSG Transmission Shudder and Rough Shifting
DSG Mechatronic Unit Failure
DSG (DQ250) Transmission Failure and Mechatronic Unit Issues
7-Speed DSG (DQ381) Shudder and Rough Low-Speed Shifting
Automatic Transmission Valve Body Issues
DSG Mechatronic Unit Failure
FAQ
What does P0730 mean?
P0730 stands for "Incorrect Gear Ratio." The transmission is not achieving the expected gear ratio. Usually indicates internal transmission problems like worn clutch packs or bands.
What are the most common causes of P0730?
The most common causes of P0730 are: Worn clutch packs, Low transmission fluid, Failed shift solenoid, Internal transmission wear, Torque converter issue. The specific cause varies by vehicle.
How much does it cost to fix P0730?
Repair costs for P0730 range from $5 to $20,000, depending on the vehicle and root cause.
Which vehicles are affected by P0730?
Au7o has documented P0730 across 133 vehicle models from 25 manufacturers: Acura, Alfa Romeo, Audi, BMW, Chevrolet, Chrysler, Dodge, Fiat, Ford, Honda, Hyundai, Jaguar, Jeep, Kia, Land Rover, MINI, Mazda, Mercedes-Benz, Nissan, Porsche, Renault, Subaru, Toyota, Volkswagen, Volvo.
Sources (12)
- TSBTSB 16-0109 - DPS6 Clutch Replacement Service Level Applications (2012-2016)
- ForumFocus Fanatics Forum - DPS6 PowerShift TCM Failure Symptoms
- ForumAll Ford Mustangs: 2011 Mustang Remedy MT82 Manual Transmission Cold Grind
- manufacturerD Mark Performance: What Causes Mustang GT Manual Transmission Problems?
- ForumAll Ford Mustangs: Official 2011-2014 MT-82 manual tranny shifting problems
- NHTSANHTSA Vehicle Page for 1999 Honda Odyssey - includes complaints related to transmission failure
- RecallNHTSA Recall 99V123000 - Honda Odyssey Automatic Transmission Recall (1999-2001 models)
- ForumAcuraWorld: 05 TL Transmission Problems
- ForumAcuraWorld: Transmission Problems? 3rd Gen TL
- mediaMotorverso: Acura TL Transmissions: Problems, Years To Avoid, And Causes
- otherCarComplaints: 2001 Acura TL Transmission Failed Complaints
- ForumReddit r/MechanicAdvice Thread on 2024 Mazda CX-90 8-Speed Transmission Jerky Behavior
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.