Warning light on? A fault nobody else can pin down? We come to you with dealer-level diagnostic equipment, read the whole vehicle, and give you a straight answer on what's wrong before you spend a penny on parts. Diagnosing cars around Watford since 2000.
Make, model, year, and the symptom or warning light. Quickest answer is by phone.
Any make, any model. If it's got an OBD port and a fault, we can read it and work out what's actually going on, not just which light happens to be on.
Engine management light, ABS, airbag, glow plug, traction. We read the stored and pending codes plus the freeze-frame data behind them, so we know what the car was doing when the fault set.
The real skill isn't reading a code, it's reading the live sensor data around it. Fuel trims, temperatures, pressures, actuator response. That's how an intermittent fault gets pinned down rather than guessed at.
Misfires, rough idle, limp mode, cutting out, or a car that won't start at all. We work back from the symptom to the cause instead of throwing parts at it.
Blocked DPF that won't regenerate, EGR-related warnings, or an AdBlue/SCR fault. We diagnose the root cause and, where it's a DPF, can force a regeneration.
Body control modules, comfort systems, communication faults on the CAN network. Modern electrical gremlins that a generic reader can't see, diagnosed properly.
Fitted a part that needs setting up? We handle module coding and adaptations so the new component is recognised and works as it should. Remote coding available for trade.
No mystery, no jargon. Four steps from your phone call to a straight answer you can act on.
Make, model, year, and what it's doing: the light that's on, the noise, when it happens. We'll tell you straight away whether a diagnostic is the right call.
Home or workplace, anywhere across Watford and the surrounding Hertfordshire area. No garage waiting room, no leaving the car in for the day.
Dealer-level kit across every module, fault codes and live data. We work back from the symptom to the actual cause rather than guessing at parts.
A clear explanation of what's wrong, what it'll take to fix, and what's worth doing versus what can wait. An honest diagnosis you can make a decision on.
You've got a warning light, a fault, or a car that's not right, and you'd rather someone who knows what they're doing came to you than sit in a waiting room being upsold. We diagnose it on your driveway, tell you straight what's wrong, and you decide what happens next. No pressure, no parts you don't need.
A vehicle in your bay you can't crack, or a job that needs kit you haven't got? We take on overflow diagnostics for local garages, and we can join a job remotely through the OBD port for coding, adaptations and awkward faults, so your bay stays productive and you keep the customer.
A lot of our diagnostic work is cars other people have already had a go at. Three reasons it lands with us.
Andrew's been diagnosing and fixing vehicles since 2000. A code is a starting point, not an answer. Knowing what the live data means is the bit that actually finds the fault.
We read every module on the car, engine, ABS, airbag, body, transmission, with the same class of equipment a main dealer uses. That's how the faults a cheap reader can't see get found.
We tell you what's wrong, what it'll take to fix, and what genuinely needs doing versus what can wait. If a diagnostic isn't worth it on your car, we'll say so on the phone first.
"Two breakdown services with diagnostics could not sort it. Within an hour of ringing Andy he was at my car, fully diagnosed it and had it back on the road within 24 hours. Very professional, amazing service, really know what they do and very fair prices."
"So pleased with Andy. He came out on short notice and persevered until the fault was fixed after multiple others had tried. Explained each step and was an absolute joy to speak to. Reliable and really good price."
Once a car's running right, plenty of owners want it pulling better too. We run a mobile ECU remapping service across Watford and Hertfordshire, Stage 1 and Stage 2, petrol and diesel.
As well as doing the diagnostics ourselves, we supply the equipment we trust to UK workshops: Autocom multi-brand diagnostics, Topdon scan tools and key programmers, and OSCA pay-as-you-go remote diagnostics. Every tool goes through Andrew's own bay before it's sold.
Browse diagnostic equipmentWe come to you anywhere inside roughly 20 miles of Watford. Don't see your town? Call and ask, we almost certainly reach you.
Tell us the vehicle and the symptom. We'll come back inside the hour, and most jobs we do at your home or workplace across Watford, Bushey and Hertfordshire.
