In general, the engine must have a vacuum that is caused by the movement of the piston down, in order to attract the load of air and fuel to the engine. The air turbocharger is used to increase the air and fuel load entering the engine. This process is known as forced induction, with which a small, fuel efficient engine can create the power of a larger engine.
The turbocharger is located in line with the exhaust system. As the boost pressure increases, the motor voltage also increases. Therefore, the motor has predetermined limits, thus avoiding future faults in any component of the motor. When the fault code P0234 is established, it means that these limits have been passed, that is why it is recommended to make the necessary repairs as soon as possible, to avoid damage to the engine or transmission.