Your 2022 Lincoln Corsair delivers compact luxury with the turbocharged performance to match—until a check engine light accompanied by noticeable vibration disrupts the refined experience. Code P0302 pinpoints the problem to cylinder 2, giving you a clear target for diagnosis in this sophisticated crossover.
Understanding P0302 in the Corsair
The Corsair offers either a 2.0L or 2.3L turbocharged four-cylinder engine. In both configurations, P0302 indicates cylinder 2 is misfiring—not firing properly during some combustion events. With only four cylinders, losing 25% of your power production creates obvious vibration.
Symptoms You're Experiencing
- Noticeable vibration especially at idle
- Check engine light on steady or flashing
- Rough running that smooths somewhat at higher RPM
- Loss of power and acceleration response
- Slight vibration through steering wheel and seats
- Possible exhaust smell from unburned fuel
Why Cylinder 2?
Ignition Coil Failure
The coil-on-plug design means each cylinder has a dedicated coil. Cylinder 2's coil may have failed while others remain functional. Heat exposure and age cause gradual breakdown.
Spark Plug Issues
The turbocharged environment stresses spark plugs significantly. Worn electrodes, improper gap, or carbon fouling in cylinder 2 specifically can cause isolated misfires.
Fuel Injector Problems
Direct fuel injectors in cylinder 2 can develop deposits, electrical faults, or mechanical issues that prevent proper fuel delivery while other cylinders operate normally.
Mechanical Issues
Less common in a 2022 model, but compression loss from valve or ring issues could affect only cylinder 2. This is more likely if the vehicle has extremely high mileage or suffered overheating.
The Quick Test
Swap the cylinder 2 ignition coil with cylinder 3. Clear the codes and drive. If the misfire moves (now P0303), the coil is confirmed bad. This simple test prevents guessing and unnecessary part replacement.
Repair Costs
| Repair | Parts | Labor | Total |
|---|---|---|---|
| Ignition coil replacement | $45-$90 | $75-$125 | $120-$215 |
| Spark plug (single) | $15-$30 | $75-$125 | $90-$155 |
| Spark plugs (all 4) | $60-$120 | $150-$250 | $210-$370 |
| Fuel injector replacement | $150-$300 | $200-$350 | $350-$650 |
Why the Vibration Is So Noticeable
Four-cylinder engines inherently have less balance than six or eight-cylinder configurations. When one cylinder misfires, the remaining three cannot mask the imbalance. This is a feature, not a flaw—it alerts you to problems quickly.