Car Diagnostics in Dapto

It means the engine management system has recorded a fault code somewhere in the engine or emissions system. It does not tell you which part has failed. A steady light usually means you can drive carefully to the workshop; a flashing light means stop, because it often indicates a misfire that can damage the catalytic converter.

You can, and it's a useful starting point — but a code names a circuit, not a broken part. A code pointing at an oxygen sensor can be caused by the sensor, the wiring to it, an exhaust leak upstream, or a fuel mixture problem elsewhere. Replacing the part the code names is a coin flip. The testing after the scan is what actually finds the fault.

Yes. The scan is quick, but the testing that follows it is the real work and that's what you're paying for. We agree the diagnostic time with you before we start, then call you with what we found and what the repair costs before anything is replaced.

Straightforward faults are often sorted within the hour. Intermittent ones — a fault that only appears when the engine is cold, or after twenty minutes of driving — take longer because the car has to be run under the conditions that trigger it.

Often, yes. A light that clears itself usually means an intermittent fault, and the code will still be stored in memory. It typically comes back, and it's easier to diagnose while the history is there than after a battery disconnect has wiped it.

Yes — rough idling, a flat spot under acceleration, poor fuel economy, hard starting or an odd noise are all things we investigate. Not every fault triggers a dash light, and plenty of the work here starts with someone saying it just doesn't feel right.

An illuminated engine management light can be grounds for a fail on a NSW eSafety inspection. If your rego is due and the light is on, get it diagnosed first rather than paying for an inspection you already know the outcome of.