What are the causes of a p0449 code?

Causes of Code P0449 1 Missing gas cap 2 Damaged/Defective gas cap 3 Torn/Damaged EVAP system hoses 4 Faulty electrical connection 5 Damaged carbon canister 6 Damaged/Defective fuel tank 7 Defective evaporative vent valve

What’s the reset code for the purge valve?

Still comes back. Purge valve is working fine and vent/valve has P0449 code. Replaced evap vent/valve and reset code. Still comes back. Purge valve is working fine and vent/valve has – Answered by a verified GM Mechanic

What’s the reset code for the EVAP vent?

This answer was rated: P0449..Replaced evap vent/valve and reset code..comes back… P0449 code. Replaced evap vent/valve… P0449 code. Replaced evap vent/valve and reset code. Still comes back. Purge valve is working fine and vent/valve has power? What gives? Show More Show Less Ask Your Own GM Question Share this conversation

What is the p0446 code on my GMC Sierra?

I do a lot of off My 2014 GMC Sierra 5.3 error code P0446. I do a lot of off roading in the truck. Not sure if it is the canister, the solenoid or the vent tube/filter. Is there a way to pinpoint which one it is?

What does the code p0449 mean on a Buick Enclave?

P0449 indicates that the valve or solenoid circuit that controls the evaporation system is not functioning properly. The EVAP system cycles fuel vapor from the gas tank into the intake manifold, a charcoal canister, or directly into the air depending on the model of vehicle.

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