Vehicle Diagnostics in Southampton – Fault-Finding You Can Trust

At E&J Jarvis, we offer professional vehicle diagnostics in Southampton for all makes and models. Whether you’ve got a warning light on your dashboard or your car just doesn’t feel quite right, we’ll get to the root of the problem using the latest diagnostic technology — without the main dealer prices.

We’re a trusted independent garage based in the heart of Southampton, serving areas including Portswood, Shirley, Bitterne, Woolston, and Highfield. With decades of experience and cutting-edge tools, we provide fast and reliable diagnostics you can count on.

What Is a Vehicle Diagnostic Test?

Modern vehicles are fitted with dozens of sensors that monitor everything from engine performance to emissions and safety features. A diagnostic test connects to your car’s onboard computer (ECU) and reads any stored fault codes, which helps identify:

• Engine performance issues
• ABS and braking faults
• Emissions problems and DPF blockages
• Transmission or gearbox concerns
• Airbag and safety system errors
• Electrical problems and battery drain
• Sensor faults and intermittent glitches

Once we’ve identified any faults, we’ll explain them in plain English — and if repairs are needed, we’ll provide a clear, no-obligation estimate before any work begins.

Why Choose E&J Jarvis for Car Diagnostics in Southampton?

• Dealer-level diagnostics – We invest in professional-grade tools to match main dealers.
• Experienced technicians – Skilled in interpreting fault codes and spotting patterns others might miss.
• Honest advice – No jargon, no upselling, just clear guidance and trusted support.
•  Quick turnaround – Same-day diagnostics often available.
• Convenient Southampton location – Easy access from all areas including Portswood, Bitterne, Shirley, and Woolston.
• Transparent pricing – Straightforward pricing with no nasty surprises. We will always speak with you before carrying out work

We've been diagnosing and repairing cars in Southampton since 1947 — and our reputation for fairness, skill and customer care speaks for itself.

When Should You Book a Diagnostic Test?

Here are the most common reasons our Southampton customers book in for a vehicle diagnostic check:

• Dashboard warning lights (engine, ABS, airbag, etc.)
• Electrical faults
• Poor fuel economy or reduced engine power
•  Car running rough, stalling or misfiring
• Excessive exhaust smoke or failed emissions test
• Fault flagged during MOT or service

Even if the warning light disappears, the issue may still be logged in your vehicle’s ECU — a diagnostic test can catch it before it becomes a bigger (and more expensive) problem.

Why do you recommend a diagnostic test for investigation work?

When we see your vehicle in for a reported fault, a diagnostic test will often be our first port of call. Our high level diagnostic machine allows our technicians to save our time and your money by getting  head start on finding your issue. Fault finding is never an exact science with symptoms often having multiple probable causes, a proper diagnostic machine allows us to have a more accurate understanding of what has gone wrong and is more reliable than the cheap code readers sold to the public.  

What Our Customers Say:

“Had a warning light on the dash — E&J Jarvis found the fault, explained it clearly, and fixed it the same day. Excellent service and value.”
— Sarah T, Southampton

“Much better than going to the dealer. Honest advice and friendly team. Will use again.”
— James H, Bitterne

 Book Your Car Diagnostic in Southampton Today

Don’t wait for a small issue to become a big one. Book your vehicle diagnostic check in Southampton today and let the experts at E&J Jarvis give you peace of mind.

Call us on 02380 229 297 or book your test online today!