You need to know the cause of the car engine problem if you want to solve the problem from the car engine properly. The engine P0849 Code helps us for solving the car engine. 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. 4 for BBV Sensor Circuit Low Voltage. 9 for Kick-Down Switch Failed Short. However, the car engine system was troublesome, misinterpreted by customers, and a rash of random failures led to the technology being rapidly discharged.