[Scruff]

Hello all, I got a check engine light pop up on my classic today. The codes are 32 and a 53. The 32 i think is probably down to the forge dumb valve that's fitted (I know, i wrote dumb). The light came on just before i got to a hill, there was nowhere to stop so had to keep going. When i stepped on the accelerator a little more, the light switched off so i'm guessing more air flow fixed it? Maybe just a dying sensor?
The 53 code is a little more confusing to me. Can someone give me a breakdown of what this code is applying to?