P0203 code new injectors no idle

[Nicodemus Arceneaux]

Now that I’ve replaced downstream o2 s, coils, plugs, injectors, iac and tps. I’m getting p0203. New injectors. What do I do?

 

[Bikeflyer]

I would check that the connectors are all seated properly. On injectors and coils it can be beneficial to use dielectric grease as well. There is a ground wire from the injector harness to the cyl head that can corrode.