local family business • Flexible Hours
Mobile Vehicle Diagnostics
When a warning light appears on your dashboard, guesswork is expensive. Griffin Auto carries professional-grade diagnostic equipment to pinpoint faults accurately the first time, so you only pay to fix what’s actually wrong. We read and interpret fault codes, carry out live data and physical testing, then explain our findings in plain English with an upfront quote before any work begins.
Diagnostic services
Engine management light (EML) fault diagnosis – finding the root cause behind that warning light, not just clearing the code
ABS faults and warning lights – diagnosing wheel speed sensors, modules and braking-system electronics
Airbag and SRS faults – safely reading and resolving airbag, seatbelt pre-tensioner and restraint-system warnings
Emissions-related faults – diagnosing the causes of failed or rising emissions
DPF (diesel particulate filter) faults – blockage diagnosis, regeneration issues and warning lights
EGR (exhaust gas recirculation) faults – sticking, clogged or faulty EGR valves and related codes
Turbocharger faults and boost leaks – diagnosing loss of power, over- and under-boost, and split or leaking pipework
Vacuum testing – locating vacuum leaks that cause rough running, poor idle and fault codes
Cooling system testing – pressure-testing for leaks, overheating and circulation problems
Head gasket leak diagnosis – identifying failing or blown head gaskets before they become catastrophic
Combustion gas (CO2) into coolant testing – a reliable chemical test for combustion gases entering the cooling system, a key sign of head gasket failure
Compression testing for petrol and diesel engines – measuring cylinder health to reveal worn rings, valves or gasket faults
