So about 2 weeks ago I was getting a Egr valve code so I did what any village idiot would do I bought a new one and replaced it, I also replaced plugs and 1 coil as it was rusted and cracked. Problem #1 Egr code came right back after replacement cleared the code 3-4 times never came back ran fine, until this morning CEL on won't stay running. Now I thought what in the heck is going on here, checked codes and I get these bad mamma jammas p0300,p0202,p0403,p0406,p0344,p0339,p0108. I have done hours of research already and am at a total loss of how all this would happen overnight. This is what my scanner had to say...

mil on

p0300 random misfire
p0202 injector circuit open cyl 2
p0403 egr control circuit
p0406 egr sensor a circuit high
p0344 cam pos sensor a circuit intermittent (bank 1 or single sensor)
p0339 cam pos sensor a circuit intermittent
p0108 map baro sensor high input

mil on pending

p0440 evap emission sys
p0441 evap emission sys incorrect purge flow
p0300 random misfire
p0339 cam pos sensor a circuit intermit
p0108 map baro sensor high input



I am using a Innova 3100abs CanOBD2 scanner to retrieve DTCs...and go.

 

Now I am also getting a p0508 code, idle air control sys circuit low.

 

A little update. I let the car sit for the last couple days, cleared codes all went away. I do however still have the infamous P0403 code at random times and as previously stated the EGR valve is only a couple weeks old. I also have a solenoid on the back right hand side of the intake that is making a clicking sound, there is a plastic arm attached to it and I have no clue what it is. Any help or thoughts would be appreciated. The car has 128k on the clock.