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.
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 Ln, Hayes, UB4 9AD.