Blog

In new cars diagnostics moved from the slow bus to Ethernet, and a cheap adapter there reads only the emissions minimum required by law. What that mea

The one case where «buy a better adapter» is bad advice: a second, pricier adapter of the same kind will not see the car either. How to tell this from

A full sweep on a real car: two of twelve control units answer on the standard socket. Why that is not a fault, what you can still learn, and where «9

This takes ten seconds and should be done before buying a car: turn the key without starting. If the Check Engine light did not come on with the other

The car drives fine, fuel use is normal, nothing rattles — yet the check light is on and the emissions test fails. That is what a system working for o

The starter spins briskly, there is fuel, there should be a spark — and the engine will not catch. If a key or car-with-padlock symbol flashed on the

A penny sensor that can quietly ruin both starting and fuel consumption. It takes ten seconds and no tools to check — just compare two numbers in the

A code about an internal control unit fault sounds like a bill for thousands. In reality the culprit is usually not the unit but its power supply — an

Low-end pull has gone, the diesel started smoking and the idle turned rough — and there is an intake runner code on the list. Nine times out of ten th