Vehicle Diagnostics

A warning light on your vehicle’s dashboard is never a welcome sight!  Modern vehicles are packed with technology and it’s not like the ‘good old days’ when engine problems were easy to identify.  Most vehicles contain an on-board computer called an Engine Control Unit (ECU) which monitors the running performance of the engine.  A series of sensors all around the vehicle continually check the ‘health’ of the engine’s components – any potential faults are assigned an error code and this error will be highlighted by a warning light.

In modern engines, an engine warning light could be the result of hundreds of potential error codes.  In order to ascertain exactly what is causing the issue, it will be necessary to run an engine diagnostic check so that the problem can be rectified before more serious (and costly) damage occurs.

What happens is that we will plug in our diagnostic equipment which then reads the error code generated by the ECU.  We are then able to identify the diagnostic path to follow, highlighting the cause of the warning light and then take the necessary steps to resolve the issue.

Common warning lights are caused by:

  • Engine management, performance, defective sensors and control valves
  • Tyres
  • Emissions
  • Air conditioning and other comfort control system repairs
  • Lights – headlamps, indicators, hazard lights, brake lights, reverse lights and any other bulb failures
  • ABS braking systems
  • Diesel particulate filters
  • Airbag system issues


At Autocade, we have invested in a range of diagnostic equipment and software so that we are capable of analysing most vehicle makes and models.  These include:

  • Snap on
  • Autel


  • Bosch KTS
  • Launch Diagnostics

So, if your vehicle is displaying a warning light, it’s important that you don’t ignore it.  Get in touch with us so we can check the cause and let you know what is needed to maintain the healthy performance of your vehicle.


We’re happy to talk, call us on 01373 826275 or click below

“Excellent service, couldn’t do enough to help us and went out of their way to get us back on the road. Highly recommend.”


All good things start with a conversation - get in touch today!


  • Autocade Motor Services Ltd
  • 132 Engineer Road
  • West Wilts Trading Estate
  • Westbury
  • Wiltshire BA13 4JW


  • Monday - Friday: 8.30am - 6pm
  • Saturday: MOTs by arrangement
  • Sunday: CLOSED
Send message via your Messenger App