Vehicle Diagnostics & Fault Finding
Warning light on, limp mode, or rough running? We scan the vehicle, check live data, and pinpoint the cause before any work goes ahead.
Best for: EML lights, limp mode, poor running
Skip to content ECU remapping, DPF cleaning, AdBlue repairs and engine diagnostics — fully mobile service across Willenhall and the West Midlands.
DPF Cleaning in Willenhall
Blocked DPFs are one of the most common faults we see on diesel vehicles in and around Willenhall. If your car has dropped into limp mode, failed a regeneration, or shows a DPF warning light, we carry out proper diagnostics first and confirm whether DPF cleaning will fix the issue.
View DPF cleaning serviceMobile diagnostics and same-day bookings available where possible.
FM Auto Remapping offers a full range of vehicle services in Willenhall — from engine diagnostics and ECU remapping to DPF cleaning, AdBlue solutions, and EGR removals. Whether you're chasing a warning light or want better performance, we get to the cause before any work goes ahead.
Warning light on, limp mode, or rough running? We scan the vehicle, check live data, and pinpoint the cause before any work goes ahead.
Best for: EML lights, limp mode, poor runningWe tailor ECU software to improve driveability and power delivery. We focus on smooth results that suit day-to-day driving — not risky maps that overstress your engine.
Best for: better response, stronger pull, smoother driveAdBlue warning on your dashboard? We diagnose NOx sensor failures, SCR catalyst faults, and pump issues — and fix the root cause, not just the warning light.
Best for: AdBlue warnings, NOx faults, SCR errorsA faulty EGR valve causes rough idle, poor economy, and black smoke. We clean or remove EGR systems and update the ECU map to run cleanly without it.
Best for: rough idle, poor MPG, smoke from exhaust
If your dashboard shows an AdBlue warning — especially one telling you the engine won't restart — don't ignore it. These faults escalate quickly and can leave you stranded.
We carry out full AdBlue system diagnostics across Willenhall and West Midlands, identifying whether the fault is a sensor, the SCR catalyst, the pump, or a tank quality issue. We fix the root cause, not just the warning light.
Common faults we see in Willenhall: NOx sensor failure, AdBlue pump fault, SCR catalyst degradation, incorrect AdBlue quality detected.
View AdBlue repair service
A faulty EGR valve is one of the most common causes of rough idle, increased fuel consumption, and black smoke in diesel vehicles — and one of the most common jobs we see across Willenhall, Wolverhampton, and Walsall.
We diagnose the fault properly first. If the EGR is beyond cleaning, we can remove it and remap the ECU to run correctly without it — resulting in better throttle response and cleaner combustion.
We carry out this work on Ford, Vauxhall, VW, BMW, and most other diesel vehicles commonly driven in the West Midlands.
View all engine servicesFM Auto Remapping is committed to providing drivers in Willenhall with dependable, high-quality vehicle services. From ECU remapping to enhance performance, to mileage correction for accurate odometer readings — we offer solutions tailored to your vehicle.
Our mobile service makes it easy to access professional remapping and repairs at your convenience. We come to your home or workplace across Willenhall and the wider West Midlands — no recovery truck needed, no garage drop-off.
Every job starts with a proper diagnosis. We don't clear codes and hope for the best — we find the cause, explain it in plain English, and carry out the work correctly.
FM Auto Remapping is based in Willenhall and covers the surrounding West Midlands area for all mobile remapping, diagnostics, and repair services. Not sure if we cover your area? Send your postcode and we'll confirm.
Not on the list? Contact us with your postcode and we'll confirm coverage.
Yes. FM Auto Remapping operates as a fully mobile service in Willenhall and across the West Midlands. We come to your home or workplace — no need to drop the vehicle off. Most remaps and diagnostics are completed on-site within 1–2 hours.
Remapping prices vary by vehicle and the map type required. Most standard Stage 1 remaps start from £199. Contact us with your vehicle registration for an exact quote — we'll confirm pricing before any work is booked.
We offer DPF diagnostics, forced regeneration, and DPF cleaning in Willenhall. We diagnose the root cause first — whether that's a faulty sensor, a blocked filter, or a failed regeneration cycle — before recommending a fix. We don't carry out cleaning if it won't solve the underlying problem.
Yes. We diagnose and repair AdBlue system faults including NOx sensor failures, SCR catalyst issues, and AdBlue pump problems across Willenhall and the West Midlands. If your vehicle is showing an AdBlue restart warning, contact us immediately — don't let the countdown run out.
We cover Willenhall and the surrounding West Midlands area including Wolverhampton, Walsall, Bilston, Darlaston, Wednesfield, Wednesbury, Coseley, Tipton, and West Bromwich. Contact us with your postcode if you're unsure about coverage.
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