Mobile Car Diagnostics · London
Mobile Car Diagnostics — £45 Fixed, 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 — 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. A £45 call-out fee applies to every job, on top of the £45 diagnostic price — and it's charged once per visit, so going ahead with a repair on the same visit doesn't add a second 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
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.
Pricing
| Service | What's Included | Price |
|---|---|---|
| OBD-II Diagnostic Scan | Full scan across engine, ABS, airbag and gearbox ECUs, fault codes read and explained in plain English, written summary of findings | £45 + £45 call-out fee |
A £45 call-out fee applies to every job, in addition to the price shown. Prices are indicative — final price is confirmed by our team before any work begins.
Diagnostics FAQs
How much does a mobile car diagnostic check cost in London?
A full OBD-II diagnostic scan is a fixed £45, anywhere in Greater London, plus a £45 call-out fee that applies to every job.
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.