P0201 2014 Chevrolet Silverado Code - Cylinder 1 Injector Control Circuit

P0201 indicates a problem with the injector control circuit for cylinder 1, meaning the engine control module (ECM) has detected an issue with the electrical signal sent to the cylinder 1 fuel injector.

Common symptoms include rough idling, misfires, reduced engine performance, poor fuel economy, hesitation during acceleration, and possibly an illuminated check engine light.

Possible causes include a faulty fuel injector, damaged wiring or connectors in the injector circuit, a malfunctioning ECM, or poor electrical connections.

Start by inspecting the wiring and connectors for the cylinder 1 injector for damage or corrosion. Use a multimeter to check continuity and voltage in the injector circuit. If the wiring is fine, test the injector itself or swap it with another cylinder to see if the issue follows the injector.

It’s not recommended to drive with a P0201 code as it can cause engine misfires, reduced performance, and potential long-term damage to the catalytic converter or other components.

Repairs may include replacing the cylinder 1 fuel injector, repairing or replacing damaged wiring or connectors, cleaning corroded connections, or updating/replacing the ECM if necessary.

Repair costs vary depending on the issue. Replacing a fuel injector typically costs $150–$400, while wiring repairs may cost less. ECM replacement can range from $500–$1,500.

Yes, a clogged or restricted fuel injector can cause the P0201 code by preventing proper operation, though the issue is often electrical. Cleaning the injector might resolve the problem if clogging is the cause.

Not always. While a faulty injector is a common cause, the issue could also stem from wiring problems, a bad ECM, or poor electrical connections in the circuit.

Regularly inspect and maintain the fuel injectors, wiring, and connectors. Use quality fuel to prevent injector clogging, and address any engine performance issues promptly to avoid further damage.