P1040 Chevrolet Injector 1 Supply Voltage Circuit Malfunction

P1040 Chevrolet Injector 1 Supply Voltage Circuit Malfunction

Possible causes
– Faulty injector 1
– Injector 1 harness is open or shorted
– Injector 1 circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)