This code indicates a malfunction in the injector circuit. Circuit is defined as electrical wiring between the injector and computer and include the injector and computer.
Inspect wires and connections at fuel injectors. With digital volt meter (DVOM), measure resistance at individual injectors. With noid light or suitable tester, check for power and ground (flashing noid) at each injector with engine cranking/running.
Some common causes for this code include:
No ground signal to injector caused by bad injector driver in engine/powertrain control module.