P0730 on Dodge
Incorrect Gear Ratio
P0730 on Dodge vehicles indicates incorrect gear ratio. Au7o has documented this code across 5 Dodge models — most commonly on Caliber, Charger, Dakota. 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 Dodge range from $500 to $5,900, 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 Dodge by Model
Dodge Caliber(1 issue)
- Jatco CVT Overheating and Premature Failure2007-2012
The Jatco CVT has an inherent overheating design flaw, especially during extended highway driving. Expected CVT lifespan only ~75,000 miles. ATF aeration compounds problems. Transmission shutdown can occur during highway driving in hot weather, leaving vehicle stranded.
Dodge Charger(1 issue)
- W5A580 (NAG1) 5-Speed Transmission Water Contamination2006-2011
The Mercedes-derived W5A580/NAG1 5-speed automatic in V8 Chargers suffers from water intrusion past the transmission oil fill tube/dipstick seal. Water contamination causes TCC to stick/slip, erratic shifting, and eventual internal damage. Gearshift cable recall issued for 20,100 vehicles.
Dodge Dakota(1 issue)
- Transmission Fluid Expulsion and Fire Risk - Recall2000-2004
Design flaw allows ATF to be expelled from fill tube during normal driving onto hot exhaust system, creating a fire risk. NHTSA recall issued for affected vehicles.
Dodge Dart(1 issue)
- C635 Dual-Dry-Clutch Transmission (DDCT) Failure2013-2016
The Marelli-designed C635 DDCT in 1.4L Turbo Darts has fundamental durability issues. The 2-4 position sensor in the hydraulic shift actuator fails, causing Service Transmission warnings, inability to shift, and jerky operation. Individual sensors not sold separately - entire actuator assembly must be replaced.
Dodge Hornet(1 issue)
- DCT Transmission Hesitation from Stop2023-2025
The 6-speed dual-clutch automatic transmission (shared with Alfa Romeo Tonale) exhibits hesitation and jerky behavior when accelerating from a stop. The clutch engagement logic is overly cautious at low speeds.
Looking for P0730 on a different make?
View P0730 across all makes →Frequently Asked Questions
What does P0730 mean on Dodge?▼
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 Dodge specifically, this code is documented across 5 models.
What causes P0730 on Dodge vehicles?▼
Common causes on Dodge: 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 Dodge?▼
Repair costs on Dodge range from $500 to $5,900, depending on the specific model and root cause.
Which Dodge models have P0730 documented?▼
Au7o has documented P0730 on 5 Dodge models: Caliber, Charger, Dakota, Dart, Hornet.