Diagnostics
Diagnostics
Warning lights, limp mode, odd noises, or poor running we use serial diagnostics and measured tests to find the root cause before replacing parts.
Diagnostics From £54
Root cause
Not Guesswork Repairs
All makes
Petrol, Diesel & Hybrid
Live data
Sensor & Injector Analysis
Clear report
Written Fault Summary
What we cover
Full diagnostic service
- OBD-II / serial diagnostics all makes & models
- Engine management & ECU fault reading
- ABS, airbag & traction control system faults
- Transmission & gearbox fault codes
- Emission & DPF system diagnosis
- Live data analysis sensors, injectors, MAF
- Electrical circuit testing & short tracing
- Pre-purchase inspection & health check
Warning signs
Signs your car needs a diagnostic check
Engine warning light
A solid or flashing engine light can mean anything from a loose sensor to a serious fault we read the codes and tell you exactly what's wrong.
Limp mode
If your car suddenly loses power and rev-limits itself, the ECU has detected a fault. We diagnose the root cause before any guesswork repairs.
Odd noises or running
Misfires, rough idle, hesitation under load live data lets us pinpoint faulty sensors, injectors, or ignition issues fast.
Multiple dashboard lights
ABS, traction control, airbag or TPMS lights all on often point to a shared fault. We trace it properly rather than replacing parts blindly.
Common questions
Frequently Asked Questions
What does a car diagnostic check actually do?
We connect professional OBD-II equipment to your car's onboard system, reading fault codes and live sensor data across the engine, ABS, airbag, transmission, and other modules, giving a precise picture of what's wrong.
Can you find a fault even if the warning light has gone off?
Yes. Fault codes are stored in the ECU even after a warning light clears. We can retrieve historical codes and identify intermittent faults that don't keep a light on permanently.
How long does a diagnostic check take?
A standard scan takes 30–60 minutes. More complex faults requiring live data analysis or circuit testing may take longer, we'll advise once we've assessed the vehicle.
Do you charge for the diagnostic check?
We charge a clearly quoted diagnostic fee upfront. If you proceed with the repair at our garage, the diagnostic cost is factored into the overall quote, ask us for details when you book.
Don't ignore it
Get your car diagnosed today
We find the fault first, then quote for the fix. No parts replaced on guesswork. 235 Yeading Lane, Hayes, UB4 9AD.