P1210 which means "Injector control pressure about expected level" what does that mean and how do I fix it?

Question

My 2001 chevy silverado 4.8L keeps displaying the code P1210 which means "Injector control pressure about expected level" what does that mean and how do I fix it?

Answer 1

Please double check the code, there is no information in the 2001 Silverado service manual for the P1210 code