P0443 and P0102 after spark plug change

[Deezul_AwT]

Tried to change my plugs this morning, but it was hot and I couldn't rotate the engine forward enough. During the work, I removed my K&N filter hoping that would give me some more rotation. It didn't give much, so I decided to call it a day. Anyway, when I took the car out, SES light was on, and it's throwing wo codes - P0102 and P0443. My filter does need to be cleaned, and I've replaced the MAF once with a junkyard one, so that's what may be throwing the P0102 code. But I have no idea what I hit or bumped that would throw the P0443. The car runs fine, but I did see when I was coasting that the tach would bounce between 1200-1800 RPMs. Could replacing the MAF fix the P0443 code as well? I've also seen that P0443 is thrown when there's a bad connection the on PCM. So maybe I jostled something there?

DTC P0102 Mass Air Flow (MAF) Sensor Circuit Low Frequency
DTC P0443 EVAP Purge Solenoid Valve 1 Control CKT

 

[TorqueAutoMotiv]

if i remember correctly the evap solinoid is on top of the engine in the back you may have bumped it reaching for the plugs

 

[mikedinthecity]

yea maybe look for vacuum leaks..i cant see it being too much else if the codes werent there b4 u were in there......

 

[Deezul_AwT]

Just an update, can believe I didn't check sooner. I cracked open the manual, as the engine fuse cover is pretty bare on details regarding which fuse does what. Manual stated one the fuses handle MAF and fuel solenoid. Found the fuse, a regular 15 AMP one. Pulled it out, blown. I feel like an idiot for not looking into the fuses more, as I would have fixed the problem immediately instead of fretting about doing a wiring trace. I have some spares in my car, so dropped a new one in, no code. Sometimes the simple solution is the correct solution.