Lazar Motors
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Diagnostics in Loughborough

Warning light on, or something not right. We find the cause before anything gets replaced.

A gloved hand holding an intake hose full of oil, taken off a diesel engine while tracing a fault
Oil where it shouldn't be: found while tracing a fault

Modern cars watch themselves constantly and store a fault code when something isn't right. Reading those codes is where diagnostics starts, not where it ends: a code tells you which system is unhappy, not always which part has failed.

We read the codes, look at the live data and test the parts involved, so the fix is based on evidence rather than guesswork.

When to book a diagnostic check

  • The engine management light is on
  • Another warning light, such as ABS, glow plug or DPF
  • The car has gone into limp mode or lost power
  • Rough running, stalling or hard starting
  • A fault that comes and goes
  • Fuel economy has dropped for no obvious reason

What’s included

  • Plugging in to read fault codes and live data
  • Testing the parts and wiring the codes point to
  • Explaining what we found and what it needs
  • Clearing the codes once the repair is done

Common questions

My engine management light is on. Can I keep driving?

If the light is steady and the car drives normally, it's usually fine to drive gently and get it checked soon. If the light is flashing or red, or the car is running badly, stop when it's safe: a flashing light often means a misfire that can damage the catalytic converter.

Will a diagnostic check tell me exactly what's wrong?

It tells us where to look. Sometimes the code points straight at a failed part. Often it identifies a system, and it takes some testing to find the actual cause.

Can you just clear the light?

Clearing a code without fixing the cause only hides it for a while, and it will come back. It's better to find out why it came on.

  • AdBlue fault repairs

    An AdBlue warning that won't clear, or a no-restart countdown on the dash. We find the fault and fix it.

  • Fuel injector repairs

    Rough running, smoke or poor starting traced to the injectors and put right.

  • MOT pre-check

    The common MOT fail points checked before the test. We can take the car to the test station for you too.

See all services. We look after cars from Loughborough, the villages around it and the rest of Leicestershire.

Book a slot that fits around work

Open Monday to Friday 5pm to 10pm, Saturday 10am to 3pm.