If the culprit is a poor fuel heaviness regulator, then it is suggest looking about for a extra part and taking your automobile to your native mechanic for installation. The car engine P2486 Code is found after the car engine is tested. The general meaning of the car engine code is p for Powertrain Code Problem is related engine, transmission and emissions systems. 2 for MFG – Manufacturer Specific. 4 for Transmission. 8 for Exhaust Gas Recirculation System Valve 1 and 6 for Cruise Control System – Vehicle Accel Too High. However, if you know how to solve the car engine, you need to use this meaning of the code.