Legacy Down Under

I have a 91 Legacy 2.2GX which has an intermitant "Check Engine" signal. This occurs if you stop the engine after 20 minutes plus driving and then re start the engine within another 20 minutes. It can usually be cleared by turning the engine off and on again. I have done an ECU download and have errors 13 (camshaft) and 35 (Purge contol solenoid valve). Can anyone out there help, what exactly do these two error codes mean.
Cheers