General Information

P0271 Cylinder 4-Injector Circuit High

General Information

Component Location





General Description

The fuel injector is a solenoid valve used to supply the correct fuel quantity for optimum combustion under varying speed and load conditions. The ECM regulates fuel injection quantity by controlling the injection duration based on load, speed, and (in closed-loop mode) HO2S feedback.

DTC Description

If there is Short to battery in injector #4 circuit, ECM sets DTC P0271.

DTC Detecting Condition





Specification





Schematic Diagram





Signal Waveform