My truck is running rough and has a miss while idling and accelerating. I have done the 3 key rotation and it is displaying 3 codes, P0521, P2146, P0201. I changed the oil pressure sensor last night hoping that would solve the one code! Thanks in advance! Any help would be appreciated!

Now I’m also getting a P0202 code in addition to the others.

Ok... Let me tag @AH64ID he's my 3rd Gen tech here. He's really good. 

 

Then let me get the codes. At least this will define the problems. It looks like there is a wiring issue with injectors #1 and #2.