Diagnostic training workshop

Browse mechanic challenges

Investigate realistic vehicle faults: choose your tests, read the results, commit to a diagnosis, carry out the repair and verify the fix.

Available challenges

1 · Clear

A petrol estate sets P0300 with a flashing lamp on the motorway. Use the freeze-frame, the trims and a fuel pressure test to find the shared cause.

Intermediate OBD Code Challenge

Peugeot 308 2015 · Petrol, manual · 1.2 PureTech Engine Management 25 min 1 attempts

Hints available