The engine code is found in the car engine but you need to fix the car engine. The engine P0843 Code is found in the car engine what comes by the car engine’s testing. The meaning of the car engine code, the owner or the automobile engineer can understand about the car engine problem and location of the problem. The 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. 4 for BBV Sensor Circuit Low Voltage and 3 for Transmission Control Module Reprogrammable Memory.