The engine P216B Code has automobile meaning and this meaning is found easily. The automobile meaning of the code is p for Powertrain Code – Problem is related engine, transmission and emissions systems. 2 for MFG – Manufacturer Specific. 1 for Fuel And Air Metering. 6 for Vehicle Speed Output Circuit and B for TFP Valve Position Switch-Drive Without Drive Ratio. The powertrain problem of the engine is easy to solve. You should study the real meaning of the engine problem for solving the car engine. Find the cause of the car engine problem and that is why, verify the car engine.