Checked on the UK Astra owners club forum and the following is suggested:
is the light still on?
if so follow this procedure: DIY method of finding out the cause without having it hooked upto a diagnostic machine
With keys out of ignition - press both brake & accelerator pedal at same time and keep them pressed to the floor....
insert key and turn to 2nd click - ignition on but DONT START THE ENGINE
Keep both pedals pressed throughout the procedure....
the EML will flash just like previous models using the paperclip
You will probably find the light flashes 10 times first then a pause then another number, a pause, another number, a pause then another number of flashes.
I say 10 times for the first one as 10 flashes = a ZERO on the fault code and most engine related faults range from P0001 to P0999
If for instance u have the following sequence
10 flashes
pause
3 flashes
pause
10 flashes
pause
10 flashes
this equals 10,3,10,10 which in turn equates to 0,3,0,0 or P0300 which in turn is "Multiple cylinder misfire"
10 is the only number that becomes another number
1-9 flashes remain a 1-9 code if that makes any sense
Have a go and let me know how u get on.... if u cant find the cause of the code - do a google with the words "Vauxhall and Pxxxx" (whatever the code is) and see what it comes up with.
http://www.astraownersclub.com/vb/showt ... p?t=170488 is the thread I found it on.