Know the real meaning of the car engine P2328 Code and the real meaning of the code is found in the manual of the car engine. Read the manual before you understand the problem and take step for solving the car engine. The letter P means powertrain and the problem is located in the car engine. You should fix the powertrain. For solving the powertrain problem, you do not need to add or change any part from the car engine. You should fix the car engine as soon as possible before you drive the car. When the car engine is ok, take the car for a test drive.