The importance of the engine P0806 Code is very high and the powertrain problem of the car engine can be fixed. You can read the general information of the car engine what you will get from the car engine automobile meaning. The automobile dictionary meaning of the code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 0 for SAE – Generic. 8 for Ignition System Or Misfire. 0 for IC Circuit High Voltage and 6 for Cruise Control System – Vehicle Accel Too High. Do not use false meaning of the car engine code for solving the car engine.