Fuel injector nightmares

[yeet_rat]

Hey guys! I recently bought a 2003 w211 e500 with 130,000 miles on it. So far it has been wonderful. Until yesterday, I got a p201 and p301 code, so I go out and get an new injector, make sure it's the same resistance as the other ones (around 12-15 ohms) and then take out the fuel rail and replace it for cylinder one. Honestly I probably would have gotten away without taking the fuel rail out. But here's the kicker, put everything back starts up just fine, p201,p301 and p300.

Any tips from anyone would be greatly appreciated!

Man I feel like my summer just got a lot longer lmao.

 

[Uncle Benz]

Test the wiring from the injector plug to the ecu plug with an ohm meter