The general meaning or the automobile dictionary meaning of the code is not perfect thing what you can use for solving the car engine. For solving the car engine problem, look for the real meaning first and if you do not find that meaning, you may use the automobile dictionary meaning, The engine P0810 Code’s automobile dictionary meaning is p for Powertrain Code Problem is related engine, transmission and emissions systems. 0 for SAE – Generic. 8 for Ignition System Or Misfire. 1 for Low Coolant Circuit and 0 for Transmission Engaged At High Throttle Angle. Do not fix the car engine by yourself if you have no idea about the car engine.