The automobile meaning of engine P229C Code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 2 for MFG – Manufacturer Specific. 2 for BBV Sensor Circuit Low Voltage. 9 for BBV Sensor Circuit Low Voltage and C for Transmission. The code tells the problem is associated with the powertrain and it is easy to solve. The general meaning of the code may make trouble in the car engine. If you do not know how to solve the car engine problem, you need not to seek any meaning of the code. The automobile engineer will find real meaning and solve the car engine problem.