J Day Engineering
Diagnostics

Warning lights and faults

Diagnostics before guesswork.

A clear way to deal with warning lights, noises, running issues and faults, with practical repair advice after the check.
Diagnostics campaign image

Warning lights

Start with the registration and what the driver has noticed.

Fault finding

Diagnostics should lead to sensible next steps, not just a fault code.

Specialist handoff

ADAS, EV and prestige cases can be routed into the correct division.

Why book here

For customers who know something is wrong, but not what.

Tell us what has changed and we will help you book the right diagnostic check.

Book diagnostics

Repair capability

The same workshop can move from diagnosis to repair where appropriate.

Clear communication

Customers need to understand the likely issue, urgency and next action.

Useful records

Diagnostic notes can become part of the vehicle history for future visits.