A P0303 trouble code in your 2022 Chevrolet Equinox means the powertrain control module has identified cylinder 3 as experiencing misfires beyond the acceptable threshold. The 2022 Equinox uses a 1.5L turbocharged four-cylinder engine that balances efficiency with adequate power for this popular compact SUV. Addressing cylinder 3 misfires protects your engine and catalytic converter while restoring smooth operation.
Locating Cylinder 3 in Your Equinox
The 1.5L turbo engine is an inline four-cylinder mounted transversely in the engine bay. Cylinder 3 is the third cylinder from the timing chain end, positioning it toward the rear of the engine bay near the firewall. Access requires reaching over or around other components, but most ignition work can be accomplished from above.
Turbo Engine Misfire Characteristics
Turbocharged engines like the Equinox's 1.5L operate under higher cylinder pressures when boost is active. This increases demand on ignition components. Spark plugs wear faster under boost conditions, and ignition coils must deliver stronger spark consistently. Any weakness in cylinder 3's ignition system becomes apparent under acceleration or climbing grades.
Common P0303 Causes in the 2022 Equinox
After two to three years of driving, several issues may trigger cylinder 3 misfires. Ignition coil failure is common, as heat cycling degrades these components over time. Spark plugs may be approaching replacement interval depending on mileage. Carbon buildup on intake valves from direct injection affects airflow. Boost leaks or turbo wastegate issues disrupt air-fuel calculations.
Fuel System Considerations
The direct injection system sprays fuel directly into the combustion chamber at high pressure. A failing fuel injector at cylinder 3 will cause inconsistent fuel delivery. Fuel pressure regulator issues affect all cylinders but may manifest as misfires at specific cylinders under certain conditions. Fuel quality always plays a role in combustion quality.