Mobile Car Diagnostics · London
Mobile Car Diagnostics — Fixed £45, At Your Door
Full OBD-II computer scan across every ECU on your car. We read the fault codes, explain what's wrong in plain English, and quote the fix — plus a £35 call-out fee, no guesswork.
What's Included
A dashboard warning light — engine, ABS, airbag, or emissions — means the car's onboard computer has logged a fault. Guessing at the cause wastes money on parts you may not need. Our diagnostic check plugs into your vehicle's OBD-II port and scans every ECU, reading the exact stored fault codes.
We explain what the code means in plain English, whether it's safe to keep driving, and what the fix will cost — before you commit to anything. If you go ahead with the repair on the same visit, there's no additional call-out charge.
- Full OBD-II scan across engine, ABS, airbag and gearbox ECUs
- Fault codes read and explained in plain English
- Live sensor data check where relevant (temperature, RPM, voltage)
- Written summary of findings and recommended next steps
- £35 call-out fee applies — the £45 price covers the full visit and scan
Common Reasons Drivers Book a Diagnostic Check
Engine Warning Light
The most common reason for a call-out. We identify the exact trigger rather than replacing parts by guesswork.
Failed MOT Emissions
A diagnostic scan pinpoints the emissions fault before your retest, saving a second failed attempt.
Strange Noises or Behaviour
Rough idling, stalling, or loss of power often trace back to a sensor fault a scan can identify immediately.
Pre-Purchase Peace of Mind
Buying used? A scan reveals hidden fault history a visual check alone would miss.
Diagnostics FAQs
How much does a mobile car diagnostic check cost in London?
A full OBD-II diagnostic scan is a fixed £45 plus a £35 call-out fee, anywhere in Greater London.
What does a mobile diagnostic check include?
We scan every ECU on your vehicle — engine, ABS, airbag, and gearbox — read all stored fault codes, and explain the cause and recommended fix in plain English before any repair work starts.
Why is my engine warning light on?
Warning lights are triggered by a stored fault code from a sensor or system on the car — common causes include emissions sensors, ignition coils, or loose fuel caps. A diagnostic scan identifies the exact cause rather than guessing.