The powertrain of the engine has the car engine problem and the engine P0237 Code is a necessary thing what describes the car engine problem shortly. The automobile dictionary meaning of the engine is found 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 7 for Transmission. You need to solve the car engine problem and the P0237 engine code is a kind of powertrain problem and this problem is easy to solve. When the car engine is solved, then you may choose the car for a test drive.