probably nothing mines been on for months had fault codes checked showed everything ok
bushdoctor
February 2010
you have 'A' fault or more than 1 fault. As a light is on the fault(s) will be logged. Scan for fault codes with a decent scanner and check live data. This should point to whats wrong
mags
February 2010
I can answer this question...
engine auto diagnosis warning light on, whats wrong?