Engine Diagnostics, DPF & AdBlue Fault Finding
Reading a fault code is only the first step—interpreting live sensor data is what fixes the car without wasting money on unnecessary parts. We use latest-generation Snap-on and SUN diagnostic platforms.
Warning Lights & Live Data
Engine management (EML), ABS, airbag (SRS), traction control, and limp-mode tracing. We test wiring continuity, boost leaks, fuel rail pressure, and sensor outputs rather than guessing.
DPF Regeneration & EGR Valves
Blocked Diesel Particulate Filters from short Medway town trips? We check differential pressure sensors, glow plugs, and thermostats before performing static/dynamic DPF regeneration or deep cleaning.
AdBlue & NOx Sensor Faults
Diagnosing 'No Engine Start in XXX Miles' AdBlue warnings, crystallised injectors, faulty tank heaters, and upstream/downstream NOx sensors across cars and Transit/Sprinter vans.
Common Questions
Why did my AdBlue warning stay on after I topped up the tank? +
Modern SCR/AdBlue systems often require a diagnostic reset once topped up, or the warning may be triggered by a faulty NOx sensor, level sensor, or blocked injector rather than low fluid.
Can a blocked DPF cause an MOT failure? +
Yes. A dashboard DPF warning light, visible smoke from a diesel exhaust, or signs that a DPF has been tampered with or removed is an automatic MOT failure.
Get a Quote Straight to WhatsApp
Because parts depend on your exact engine code and chassis, enter your UK reg below and our Chatham workshop desk will message you back with a clear price.
Or call our Beacon Road reception directly on 01634 811 666. Need one of our 6 free courtesy cars? Just mention it in your chat.