Fault code P0715
P0715: input or turbine speed sensor fault
P0715 means the control unit isn't getting a sensible signal from the input (turbine) speed sensor, which tells it how fast the gearbox input is turning. Without it, the gearbox can't time its gear changes properly.
Can I still drive it?
Drive gently and get it checked soon. Sensor faults are often a straightforward repair if they're dealt with before other damage is done.
Common causes
- A failed input speed sensor
- Damaged wiring or a corroded connector
- Conductor plate or internal wiring faults (common on some Mercedes 7G-Tronic gearboxes)
- Control unit faults
What you might notice
- Harsh or erratic gear changes
- Limp mode
- Warning light
- Changes happening at the wrong time
How we fix it
- Read every stored code with gearbox-level diagnostic equipment
- Road test and check the fluid, wiring and sensors
- Explain the real cause and your options, with a clear quote
- Repair only what's needed, then road test and check again
What our customers say
“Their quote was not only the cheapest but they were by far, the most professional of the garages we spoke to, including Ford main dealers. The service was excellent from start to finish.”
David P.Ford Ranger, 10-speed · Kent branch · April 2026
“It was suspected that my gearbox needed a complete rebuild… after extensive investigation it was found that the gearbox was working exactly how it should be… You don't find repair shops as honest as this one very often.”
Anthony V.Ford Kuga · Kent branch · January 2025
“They diagnosed the problem quickly, explained everything clearly, and carried out the repair with real professionalism. The quality of the work is outstanding, and my Range Rover is now driving better than ever.”
Rheanna G.Range Rover · Essex branch · June 2026
Real reviews left on Google by our customers.
Other warning lights and fault codes
Gearbox warning light or message
What a transmission warning light means and what to do.
Gearbox limp mode
Stuck in one gear with low power? That's limp mode.
DSG flashing gear indicator
PRNDS letters flashing on a VW, Audi, Skoda or Seat.
P0700
The gearbox has stored a fault. Here's what P0700 really means.
P0730
The gearbox's input and output speeds don't match the gear selected.
P0741
The torque converter's lock-up clutch isn't engaging properly.
P0841
The gearbox's fluid pressure reading isn't what it should be.
Find your nearest branch
Kent
Unit 1, 8 John Hall Close, Faversham ME13 7TY
01795 668080
Surrey
Rear of Unit B14, Capons Yard, Techno Park Trading Estate, Egham TW20 8RN
01784 542209
Essex
22 Davey Close, Colchester, Essex CO1 2XL
01206 701703
Dorset
39a Southcote Road, Bournemouth, Dorset BH1 3SH
01202 150881
Torquay
21-27 Alexandra Lane, Torquay, Devon TQ1 1JD
01803 503101