P2147 2016 Chevrolet Silverado Code - Cylinder 1 Injector High Control Circuit Low Voltage

P2147 indicates a low voltage issue in the high control circuit for fuel injector 1, meaning the Engine Control Module (ECM) is detecting a problem with the injector's electrical circuit.

Common symptoms include engine misfires, reduced engine power, rough idling, poor fuel efficiency, and the check engine light being illuminated.

The most common causes include a faulty fuel injector, damaged wiring or connectors in the injector circuit, a malfunctioning ECM, or an issue with the injector control module.

Driving with a P2147 code is not recommended, as it can lead to poor performance, reduced fuel efficiency, and potential damage to the engine or catalytic converter.

To diagnose, inspect the fuel injector’s wiring and connectors for damage, test the injector’s resistance, and check the ECM or injector control module for faults using a multimeter or scan tool.

The repair cost can vary depending on the cause, but replacing a fuel injector typically costs between $200 and $400, while fixing wiring issues or replacing the ECM may cost more.

No, a dirty fuel injector typically does not cause this code. P2147 specifically refers to an electrical circuit issue, not a mechanical clog or obstruction.

You will need a scan tool to read the code, a multimeter to test electrical circuits, and possibly a wiring diagram for the fuel injector control system.

Clearing the code without addressing the underlying issue will not fix the problem. The code will likely return unless the fault in the injector circuit is repaired.

Yes, a malfunctioning ECM or injector control module could cause the P2147 code, though it is less common than issues with wiring or the injector itself.