P0283 2018 Chevrolet Silverado Code - Cylinder 8 Injector Control Circuit High Voltage

P0283 indicates a high voltage issue in the injector control circuit for cylinder 8. This means the engine control module (ECM) is detecting an electrical problem with the fuel injector.

Common symptoms include rough idling, misfires, reduced engine performance, poor fuel economy, and possibly the illumination of the check engine light.

Causes may include a faulty fuel injector, damaged wiring or connectors in the injector circuit, a malfunctioning ECM, or corrosion in the electrical connections.

Driving with this code is possible but not recommended. It can lead to further damage, poor performance, and increased fuel consumption, so it’s best to address the issue promptly.

Start by inspecting the wiring and connectors for cylinder 8’s fuel injector, use a multimeter to check for proper voltage and continuity, and test the fuel injector itself for functionality.

You may need an OBDII scanner, a multimeter, basic hand tools, and possibly a wiring repair kit or replacement fuel injector, depending on the issue.

Costs can vary, but replacing a fuel injector typically costs $150–$300 for parts and labor, while fixing wiring issues may cost $50–$100 if DIY or more if done professionally.

Yes, a malfunctioning ECM can cause this code, but it is less common. Rule out wiring or injector issues before suspecting the ECM.

Regular maintenance, including checking and cleaning electrical connections and inspecting wiring for damage, can help prevent this code from recurring.

Clearing the code will turn off the check engine light temporarily, but if the underlying problem isn’t fixed, the code will return. Proper diagnosis and repair are necessary.