If the powertrain of the car engine is fault, you should not think to drive the car with the car engine problem. The car engine P2822 Code is the way to know the problem of the car engine fast. This general meaning of the code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 2 for MFG – Manufacturer Specific. 8 for Ignition System Or Misfire. 2 for Air Conditioning (A/C) Clutch Feedback Circuit High Voltage and 2 for A/C System High Pressure High Temperature. When the car engine is fixed, you should take the car for a test drive.