Real diagnostic cases
Practise like in the workshop: symptoms, DTCs, live data and a confirmed root cause.
P0301 Cylinder 1 Misfire
Rough idle, slight shake and a loss of power. The check engine light is solid, not flashing.
P0299 Turbo Underboost
Loss of power, especially on hills. The turbo seems quiet and acceleration is flat.
Multiple Modules Offline (CAN Failure)
The instrument cluster shows several warnings. The engine runs but the ABS, stability and airbag lights are all on. The scanner ca...
ABS Warning and Intermittent Pulses
The ABS light comes on intermittently at low speed and the pedal pulses occasionally when braking gently.
Diesel Hard Starting When Cold
The engine is difficult to start when cold, with grey-white smoke and rough running for a few seconds.
Random Misfire P0300 After City Driving
The engine stumbles at idle after a long period of short city journeys. The check engine light comes on intermittently.
P0172 System Too Rich
Black smoke under acceleration, poor economy and a strong fuel smell from the exhaust.