The P0302 trouble code on your 2020 Volkswagen Passat indicates that cylinder 2 is experiencing misfires detected by the engine control module. The NMS Passat is powered by the EA888 2.0L TSI turbocharged four-cylinder producing 174 horsepower. At typical 2020 mileage, age-related factors may contribute to misfire conditions.
EA888 Engine at Higher Mileage
The 2.0L TSI has accumulated meaningful mileage by 2020 standards. Direct injection may have developed carbon buildup on intake valves. Ignition components may be approaching or past replacement intervals. Comprehensive diagnosis should consider age-related factors.
Common Misfire Causes
By 2020 mileage, carbon buildup on intake valves may be significant. Ignition coil degradation from heat and age affects spark delivery. Spark plug wear reduces ignition energy. High-pressure fuel system wear can affect delivery. Vacuum leaks from aged components develop.
Symptom Recognition
The mid-size sedan displays rough idle, vibration, and hesitation with misfires. Four-cylinder engines show pronounced symptoms. The check engine light accompanies the condition.
Repair Solutions
Replace spark plugs with VW-specified units. Replace ignition coils as needed. Clean intake valve carbon through walnut blasting. Service fuel system components. Address vacuum leaks discovered during diagnosis.