Hello! I'm new to Mazdas entirely. I recently bought a black 2003 Mazda Protege5 from a private owner. I have not been able to contact the original owner (different than the one I bought it from). We got a reader and found six different codes were thrown. One of them, P0507, was thrown twice. I was looking for help on possible remedies to these issues. The MAF sensor WAS replaced by the previous owner, but I think (could be wrong) that those codes could also be thrown by bad fuel sensors in the engine.

We replaced the front exhaust pipe and the downstream oxygen sensor because there were really bad gaskets there and a possible leak. We are fixing the emergency brake and have fixed the shifter bushings. I don't think those would've caused any of the found issues, but it might be useful information. I am wondering if anyone has had these codes thrown on their cars and how I might be able to fix them.

Here is the photo:

This is a photo of the original codes the computer threw. I noticed that P0507 was thrown twice.


Thanks in advance!