The automobile meaning of the engine P0233 Code is P for Powertrain Code Problem is related engine, transmission and emissions systems. 0 for SAE – Generic. 2 for BBV Sensor Circuit Low Voltage. 3 for BBV Sensor Circuit Low Voltage and 3 for Transmission. Powertrain problem is found on the car engine and at the cheap rate the car engine is easy to solve. Do not drive the car with the car engine problem. However, do not use wrong meaning of the code for solving the car engine. You may get more problems in the car engine. A test drive is necessary to solve the car engine.