Warning lights explained
Gearbox warning light or message
A gearbox warning light, or a message such as 'Transmission malfunction' or 'Gearbox fault', means the gearbox control unit has spotted a problem and stored a fault code. The light itself doesn't say what's wrong: the stored code does, and reading it needs equipment that can talk to the gearbox, not just the engine.
Can I still drive it?
Drive gently and as little as possible until it's checked. If it's slipping, won't select gears or smells hot, stop and call us: we can collect it.
Common causes
- Low or overheated fluid
- A faulty speed or pressure sensor
- Solenoid, valve body or mechatronic faults
- Wiring or connector problems
- Internal wear or failure
What you might notice
- Harsh or delayed changes
- Stuck in one gear (limp mode)
- Gear indicator flashing
- Loss of drive
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 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.
P0715
The gearbox can't read its input speed correctly.
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