1996 g20 engine light is on. have codes

[vvaffle]

so i finally got a chance to scan the ECU on my g20 and i came up with two. im just looking for advice on what i should do to fix it.

code 1: p0400 EGR flow malfunction

code 2: p0325 knock sensor 1 circuit malfunction, bank 1 or 1 sensor

i use regular gas and as far as i know, the g20 doesnt need premium. any ideas?

[LayNLow240]

I would start by cleaning your EGR valve and make sure your knock sensor is plugged in and the harness has no frays or cuts or anything.

[vvaffle]

thanks, ill give that a shot as soon as it stops raining.

by the way, when i clear the codes it takes them at least a few days to turn back on