• Diagnostics Health Checks
  • £39.95 inc VAT
  • Expert advice on all makes and models

Call 0345 2997955 to book

Engine Diagnostics

Have you got a warning light on your vehicle dashboard?

Warning lights are designed to alert you to potential issues and if they stay on or illuminate whilst you’re driving there’s a cause for concern. 

The warning light you see on your dashboard only gives you a very small part of the picture. Professional diagnostics read the error messages that cause the light to illuminate, identifying the root cause. An early diagnostic check is strongly recommended to help prevent component failures which can lead to further damage and expensive repairs.

Vehicle fault codes

Modern vehicles are crammed full of electronic features & technology. In order to check the electronics are working as they should, they are fitted with sensors to help monitor their condition. These sensors continually report to the ECU (Engine Control Unit) and if a problem occurs, it logs a fault code on the ECU’s memory. If the ECU detects an issue, you’ll be alerted to it by a warning light on your dashboard. 

The warning lights on your dashboard follow a traffic light colour system:

Yellow or Amber lights advise the driver that something isn’t working as it should be. You should take extra care and get a professional diagnostic check as soon as possible

Red lights indicate a more serious & potentially dangerous problem. You should stop driving as soon as it is safe to do so.

If a warning light or fault code appears on your dashboard we’d advise you to contact your local branch to book a diagnostic health check. Whilst it may be something very minor, warning lights could also indicate a more serious problem. It may be tempting to delay booking your vehicle into the workshops but the earlier we can investigate the issue, the less likely it will be that damage is done.


What problems does the ECU pick up?

The ECU can pick up problems with emission levels, engine temperatures and even windscreen wipers. You may see a warning light on your dashboard but this only gives you a very small part of the picture. Our diagnostic health checks read these error messages and identify the root cause, so component failures can be prevented before they lead to further damage and expensive repairs.

What is a diagnostic health check?

A diagnostic health check is carried out by a trained vehicle technician using specialist diagnostic equipment. This equipment is designed to read fault codes and clear error codes.  In order to be able to read as many codes as possible, we carry a range of diagnostic equipment across our branches. Using different systems gives us a much wider coverage than most other independent garages.

The cost of our diagnostics is fixed at £39.95 in all our branches. If we discover problems with your engine or other components we’ll then provide you with a free, no-obligation repair quote.

A guide to dashboard warning lights

Engine management light
Brake warning light
ABS Light
Coolant levels light
Brake warning light
Glow Plug light
Power steering warning light
TPMS light
Air Bag warning light
ESP light
DPF warning light
Particulate filter warning light

Engine diagnostics near me