Meaning of the car engine P2812 Code is found from online and automobile dictionary. If you want to fix the car engine, you need to know the right meaning and you have to have skill for checking and solving the car engine. The P2812 engine code seems a kind of powertrain problem and it is not much difficult to solve. We try to show one by one the right meaning and the solution. In addition to these matters, while the company planned a hydraulically controlled system that could be substituted from within the car, the version they realized had to be physically changed in the engine compartment using hand tools.