P0730 on Jaguar
Incorrect Gear Ratio
P0730 on Jaguar vehicles indicates incorrect gear ratio. Au7o has documented this code across 6 Jaguar models — most commonly on E-PACE, F-PACE, F-TYPE. 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 Jaguar range from $200 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 Jaguar by Model
Jaguar E-PACE(1 issue)
- 9-Speed Automatic Transmission Harsh Shifting2018-2023
The ZF 9HP 9-speed automatic transmission in the E-PACE exhibits harsh shifts, gear hunting on hills, and hesitant downshifts. The transmission software struggles with the closely-spaced gear ratios, particularly in low-speed urban driving and during cold operation.
Jaguar F-PACE(1 issue)
- ZF 8HP Transmission Valve Body Malfunction2017-2023
The ZF 8HP automatic transmission used across the F-PACE range develops valve body issues causing harsh shifts, delayed engagement, and occasional limp mode. The solenoids in the mechatronic unit wear prematurely, particularly in stop-and-go driving conditions.
Jaguar F-TYPE(1 issue)
- ZF 8HP Valve Body Wear2014-2023
The ZF 8HP transmission in the F-TYPE develops valve body wear from aggressive sport driving. The quickshift calibration and high torque loads accelerate solenoid and bore wear, causing inconsistent shift quality and occasional harsh engagement.
Jaguar S-TYPE(1 issue)
- Automatic Transmission Valve Body Wear2000-2008
The ZF 5HP and 6HP automatic transmissions in the S-TYPE develop valve body wear, causing harsh shifts, slipping between gears, and delayed engagement from park. The Ford JF506E used in some V6 models also suffers from similar solenoid-related issues.
Jaguar XE(1 issue)
- ZF 8HP Harsh Shifting and Hesitation2017-2023
The ZF 8HP transmission in the XE exhibits harsh shifting between 2nd and 3rd gear and hesitant downshifts during spirited driving. The adaptive shift logic can become confused, leading to inconsistent shift quality that worsens in cold weather.
Jaguar XF(1 issue)
- ZF 8HP Mechatronic Unit Failure2016-2023
The ZF 8HP transmission mechatronic unit in the second-generation XF develops internal electrical faults. Failed solenoids and worn valve body bores cause erratic shifting, stuck gears, and transmission fault warnings that put the vehicle into limp mode.
Looking for P0730 on a different make?
View P0730 across all makes →Frequently Asked Questions
What does P0730 mean on Jaguar?▼
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 Jaguar specifically, this code is documented across 6 models.
What causes P0730 on Jaguar vehicles?▼
Common causes on Jaguar: 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 Jaguar?▼
Repair costs on Jaguar range from $200 to $4,500, depending on the specific model and root cause.
Which Jaguar models have P0730 documented?▼
Au7o has documented P0730 on 6 Jaguar models: E-PACE, F-PACE, F-TYPE, S-TYPE, XE, XF.