P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction
Here is a video on how to fix engine code p0449
Trouble code P0449 means: EVAP Vent Solenoid Control Circuit Malfunction
Trouble code P0449 means: Evaporative Emission System Vent Control Circuit Intermittent
The DTC P0449 is: EVAP Emission Control System Vent Vlv/Sol Malf Straight out of my code book. Hope this helps you out.
There is air escaping from the gas tank. Often a problem with the gas cap, try tightening the cap, reset the code and see if it comes back on. Essentially it is testing for cracks in the tank.
No, but you will fail an emissions test.
P0449ChevroletEVAP Vent Solenoid Control Circuit Malfunction
P0449 says that the PCM is not seeing the voltage potential it wants to see when the vent valve is off or commanded on. I would suspect it is the Evaporative Emissions (EVAP) Canister Vent Solenoid near or on top of the gas tank is bad. To make sure check the voltage at the pink wire. It should be around 12 volts. If it is low, it may be bad wiring or the PCM, but not likely. if you have 12 volts suspect the solenoid.
An error code P1684 from an OBDII code reader indicates that the battery had recently been disconnected. This is normal if a new battery was installed but can indicate a connection issue or grounding problem.
Trouble code P0780 means: Shift malfunction
Check the O2 sensor after the catalytic converter.
This is not a "Generic" OBDII code. That means that it means diferent things on diferent car makes.