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Yeah, it almost has to be a bad vent solenoid, or a broken connection in the wiring to it. This code is saying that the PCM is not seeing the voltage change when it grounds the vent solenoid to activate it.
Should have system voltage at one terminal with the ignition on, and a ground at the other terminal when the PCM commands the vent valve open.
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How do you fix engine code p0449?
Here is a video on how to fix engine code p0449
P0449 code fix on a 2003 silverado?
The DTC P0449 is: EVAP Emission Control System Vent Vlv/Sol Malf Straight out of my code book. Hope this helps you out.
What is OBDII CODE P0449?
P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction
What does a code P0449 on a 2000 dodge neon mean?
Trouble code P0449 means: Evaporative Emission System Vent Control Circuit Intermittent
How do you fix a p0449 evaporator emission control system vent valve solenoid circuit malfunction on a 2007 Chevy Suburban?
install updated vent control solenoid valve and jumper harness.
What does code p0449 evap emissions code for 2000 Pontiac grand prix?
Trouble code P0449 means: EVAP Vent Solenoid Control Circuit Malfunction
How do you fix a P0449 evaporative emission control system vent valve solenoid circuit malfunction on a Cadillac?
The car should be taken to a mechanic if the owner doesn't know what he or she is doing. Otherwise, there are books for each type of car that can be gotten to help fix almost anything wrong if the person knows what they are doing.
Will a you damage your truck if you continue to drive it with the p0449 code?
No, but you will fail an emissions test.
How do you fix p0449 code on a 2003 silverado 1500?
The most probable cause is a vacuum leak or a bad fuel cap. Inspect all the vacuum hoses for damage and buy a new fuel cap, making sure it is tightly on the vehicle.
How do you fix OBDII code p0449 in a 2006 4-cylinder gmc canyon?
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.
Repair for obd2 code p0449 gmc truck?
P0449ChevroletEVAP Vent Solenoid Control Circuit Malfunction
How do you fix the code p0449 yourself?
on 2006 c/k 1500 series gm trucks, the evaporative emissions vent valve solenoid is in front of the evap cannister underthe driverside of the truck. a 13mm socket will remove the bracket that holds it in, then you need a couple of small picks to take out the plastic clip that holds the hose on, and unplug the two-wire plug, and Viola!
