Gm error code p0449

being either stuck on or off. this is usually caused by road dirt getting into the vent sol. due to it' s mounting location obove the fuel tank. you have two options, one is just simply replace the vent sol. the other and the correct repair is. OBD- II Code P0449 is defined as a Evaporative System Vent Control Circuit Malfunction The evaporative control ( EVAP) system captures any raw fuel evaporating from the fuel storage system ( e. the fuel tank, filler neck, and fuel cap). The P0449 is actually a " known problem" and GM has issued a Technical Service Bulletin that states the correct repair is to Replace Evaporative Emission ( EVAP) Vent Valve Solenoid Assembly and Add/ Relocate Filter Box Using Service Kit. Here is a description and how to diagnose EVAP code P0449. P0449 Evaporative Emission Control System Vent Valve/ Solenoid Circuit Malfunction This code can be caused by a loose or faulty gas cap. Look for cracks around the seal on cap. The P0445 code can be somewhat misleading because what the code really indicates is that the purge function of the EVAP system isn' t triggering the specified amount of vacuum when the EVAP monitor performs its leak test. I went immediately to Advance Auto Parts to get the code and it was a P0449.

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    I know that it has to do with the evap system, but I want to see if anyone else has had this issue. The gentleman was convinced that it was my gas cap. Do a search on the P0449 code & you should find all the information that you need to fix your truck. To answer your question, yes it' s the solenoid as I' ve had to get the same solenoid replaced. The code relates to all vehicles, however they differ in the sensor output. For instance, Buick' s sensor produces about 0. 1 volt with positive pressure in the tank and up to 5 volts with negative pressure, as in a vacuum. This Pontiac G6 came in with the SES light on and code P0449 stored. There was also a symptom code of 00 present. The canister vent solenoid is located at the right rear of the fuel tank. evap solenoid on a yukon engine light with p0449 code - GMC Yukon question. SOURCE: I HAVE A GMC You usually won' t have any trouble getting them to do this and then you' ll have a good.

    When I recorded this there were no videos to fix the P0449 code for Chevy HHR' s so I put this up in case it can help anyone. The on- board diagnostics, or OBD, code P0442 can often be fixed by tightening the gas cap or replacing the gas cap. The code indicates a small leak in the evaporative emissions, or EVAP, system, which is commonly caused by a loose gas cap or a small hole in the cap. OK, went to co- workers with a Impala LT and swapped his vent and purge valves to the to remove any doubt and still have the same issue erase codes, says 0 codes found after erasing, read again same P0449 code found. P0449 vent solenoid control code stored. Vent solenoid is working. Hooked up smoke machine and commanded vent valve on and off to determine that it' s working. A GM technical service bulletin forChevrolet Silverado and GMC Sierra describes a problem when if the vehicle is driven in dusty environment, the dust can enter into the canister vent hose and cause restricted air flow that can set the code P0446. It appears that the Evaporative Emission Canister Purge Solenoid is bad on our Montana. The Check Engine light comes on and stays on. The reader returns codes P0440 and P0449. Error Code P0449 means there’ s a problem in the Evaporative Emission Control System Vent Valve or Solenoid Circuit malfunction.

    Evaporative Emission Control System Vent Valve/ Solenoid Circuit Malfunction. What does that mean? This code is a generic powertrain code. It is considered generic because it applies to all makes and models of vehiclesnewer), although specific repair steps may vary depending on the model. The P0455 it’ s a very common code because the code is set if the gas cap is loose or missing. Start by tightening the gas cap and clearing the code. In most cases, the code can be clear by disconnecting the car battery for about 30 minutes. EVAP control system has a very large leak such as fuel. Home Forums > General Tech Forums > General Chevy & GM Tech Questions > How to Fix Code P0449 Evap Pics, Video and part # ' s Discussion in ' General Chevy & GM Tech Questions ' started by Enkeiavalanche, Jan 2,. P1400 Chevrolet How to fix a P1400 Cold Start Emission Reduction Control System on Chevrolet.

    If you have a P1400 Chevrolet trouble code, read this article on what the code means and how to fix the problem. Actron Diagnostics offers a code look up tool for your automotive diagnostic and scan tool needs. P0449 OBD- II Diagnostic Powertrain ( P) Trouble Code Description P0449 OBD- II Trouble Code The Evaporative Emission System ( EVAP) canister vent control valve is located on the EVAP canister and is used to seal the canister vent. P0449 Gmc Description The Engine Control Module monitors the Evaporative Emission System Vent Valve/ Solenoid system wiring for opens or shorts. The ECM sets the OBDII code when EVAP Vent Valve/ Solenoid is not to factory specifications. Re: Check Engine Code P0449 Thanks for the quick reply, i think this part is the same one that the GM dealer was looking into. It appears that it does not come with the solenoid itself " CANISTER, EVAP EMIS ( W/ O VENT VLV SOL) ". P0135 is a bad 02 sensor P0442 is a evap problem P0449 is a vent solenoid i would check the vent solenoid first its a 4ws fuse under the hood in the fuse box make. P0449 Chevrolet Description The Engine Control Module monitors the Evaporative Emission System Vent Valve/ Solenoid system wiring for opens or shorts. DTC P0449 runs continuously when the above conditions are met. CONDITIONS FOR SETTING THE DTC The control module detects that the commanded state of the driver and the actual state of the control circuit do not match, for a minimum of 12 seconds. GM Trouble Codes - Check Engine Light Codes. Welcome to the GM Trouble Codes and Check Engine Light codes page.

    Below you will find the most complete list of GM trouble codes available. Now i must ask if it was a hard fault, memory code, or enhanced code. Since you had a battery not staying charged, this can be a safety issue. You would theoretically be chancing the short causing very bad damage. since the dealer said, not a serious issue, they must define it as evap emissions code. Shops report problems with P0440, P0441, P0442, P0446 EVAP codes on GM vehicles. In order to troubleshoot any of the GM EVAP codes, it’ s important to understand how the system works. The evaporative emissions system is designed to prevent raw gas vapors from entering the atmosphere. The Chevrolet Silverado has 5 problems reported for engine light code p0449. Average repair cost is $ 210 at 86, 650 miles. P0449 control vent valve/ solenoid circuit malfunction, This code necessarilly deal with replacing the vent solenoid it about the circuit, the evap vent solenoid circuit may have rub through on the frame ( located on the back of the fuel tank), it can also be the connector, the vent solenoid itself, or the connector. I had a P0449 code on my Silverado crew cab and used ACDelcoCanister Solenoid Valve Kit to fix it. I did not need to use 5/ 8 heater hose as others have used, because with a little bit of silicon spray and a bit of wiggling and pulling, I was able to get the original hoses off in reusable condition. This code seems to be prevalent on D* * * e, Chrsyler, and Jeep products. In those cases the vent valve was bad.

    With GM products ( specifically pickups), GM has released a new updated valve assembly. Gm has a PCM flash fix for this Document ID# Chevrolet Corvette DTC P0443 or P0449 Diagnostic Instructions • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. hello, My 07 with only 48k miles has the check engine light on. I have read the code and it is P0449. I know it is something to do with the emissons/ evap system.