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Diagnostics and parts writer

Greg Malone

Greg specialises in modern car electronics and has spent years explaining fault codes to people who have never used a scanner before. He writes about diagnostics, parts selection and the electrical systems that most DIY guides still treat as a black box.

Focus areasOBD2 diagnosticsElectrical systemsParts sourcingFault code interpretation

Blue grid pattern on white suggesting a circuit board or diagnostic interface Diagnostics

How to Read OBD2 Codes at Home

The first time a warning light comes on and stays on, most people do one of two things: they ignore it and hope, or they book a...

Greg MaloneSep 11, 20266 min read
Blue prism pattern suggesting electrical spark and ignition cycle Diagnostics

Diagnosing a Misfire Without a Scanner

A misfire is one of the most common faults a petrol engine produces, and it is also one of the more diagnosable ones without...

Greg MaloneSep 11, 20265 min read