hi scotty 2000 civic lx misfires
I recently plugged in the scanner and got two codes pulled out. the first 1 p0303 mis firing cyl no. 3 I checked the wires everything seems good. the second code p1399 which can be several things according to the info I gathered. any suggestions or where do I start. please help me out im low income n the last thing I want is spending on parts that aren't the issue
For P1399 see below: but tackle the P0303 code first.