Vic,
I could be wrong here but if the light stays on after you have started the engine you will see the current fault flashed then followed by the historic faults when doing this test.
If the light goes out after the engine is started then when you do the test, historic fault is flashed.
At one point I disconnected the input plug to the ignition coil and turned the ignition on without even attempting to start the engine .
This now flashes as a historic fault code.
I'm still trying to find out how to clear the historic fault code from its memory. PCHUD has this ability but at present it is "greyed out".
Have you tried to adjust the idle speed using the adjusting screw. The reason I ask is that from some of the stuff I've been reading gives the impression that the idle speed should only be adjusted using software and the data connection.
