The car engine C1847 Code is a trouble code of the car engine and it is important thing to identify the real meaning of the engine code. There are some common reasons to be the problem of the car engine. Those reasons are O2 Sensor Heater Circuit Fault, Injection lump Fuel Metering Control ‘B’ High (Cam/Rotor/Injector) and Timing Orientation High Resolution Signal A Too Many Pulses. Disconnected, dirty or fouled spark plugs are general reasons for engines that will not start. You need to confirm that the car engine is ok and that is why, a test drive is recommended after solving the engine problem.