hello. new to the forum. been looking through he forum but couldn't find similar posts.

heres what i got. i was having a P0302 code 2 weeks ago. i decided i was going to replace the champion copper plugs in my 5.9L with NGK platinums. cleared the misfire. and all was good for a week. code came back again. this time i decided to swap cylinder 2 and 4 injectors to see if it was the fuel injector. cleared the code. started the truck. now i got 4 codes. p0201, p0300, p0302, p0307. drove the truck for 2 days. p0300 and p0302 went away. today i went out and cleared the codes. p0307 doesnt come back right away but p0201 comes bak after a few moments of the engine running.

why could i get the 4 codes after only removing the passenger side injectors?



2002 dodge ram 1500 sport 5.9L with 345,000km on the body and 25-30 thousand on the long block.