error codes 13 and 33

[Pimpn1]

hey all, just checked error codes as the engine light comes on and off every now and then and its logged 13 and 33 how do i rectify this? and help would be great, also what do they mean?
thanks

[rob drag racer]

these sites have what the issue is and some reasons why the codes went off
the second link is far more in depth about how the reporting system works suggest the most common reason for the faults at the bottom of the page

Just Commodores - For All Your Holden Commodore Needs

ALDL Information for the VN & VP Holden Commodore

both are very helpful i hope this helps you