Gm gas cap error code

Texas Owner' s Group. I had a broken wire going to the evap vent solenoid that caused my truck to throw a code for the gas cap and the evap vent solenoid. From what I' ve read, it sounds like your problem could easily be a defective gas cap if your only code is for the gas cap. Re: Code P0455 and the Gas Cap P0455 is an evap system large leak detected. Could be a broken evap line, cracked cannister, purge valve or vent valve stuck open. · GMC Envoy Check Engine Light Due to Gas Cap Issue - 114 reports. Learn about this problem, why it occurs, and how to fix it. The gas cap code is a common diagnostic trouble code that might turn your check engine light on. I put together a video discussing a problem my neighbor. For those of you getting this code ( P0442) I found the solution to it it was the gas cap that throws up that code. I had to re- tightened the gas cap and manually remove the code and been driving the truck for over 2 days ( 100) Miles and nothing has popped up. · The GAS CAP code. there is a logical flow to follow when trying to identify what is going on.

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  • Video:Error code

    Error code

    I' ll get a " loose gas cap" error on the. 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. The gas cap, also known as the fuel filler cap, is a simple but important component that is found on the vast majority of road going cars and trucks. Their purpose is simple; to prevent dirt, debris, and dust from entering the. Loose or Missing Gas Cap – This is, by far, the most common cause of EVAP system leak codes, such as P0455, P0442, P0456, or P0457. Install and tighten the gas cap after every refueling. Refueling with Engine Running – You should always shut down the engine when refueling, and not only for safety reasons. Unfortunately, the gas cap replacement didn' t clear the code but I realized how bad my existing cap was and the quality of this replacement gas cap. This gas cap fit my vehicle perfectly and I once again had the missing lanyard that kept me from leaving the gas cap at the gas station or on the rear bumper of my SUV. Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.

    Otherwise, replace the gas cap ( we recommend an OEM original part, not aftermarket part), or Visually inspect the EVAP system for cuts/ holes in tubes/ hoses. · P0455 Chevrolet Evaporative Emission Control System. Evaporative Emission Control System Leak. A gas cap being loose/ damaged can trigger pretty much any of the leak codes. I used to see P0455/ large leak the most when I was at Hyundai but depending on how loose the cap is and the control system it may set different codes. · Occasionally, my gas cap is screwed on tight enough. The check engine light comes on, usually when the gas tank is just above half. I unscrew it and screw. Gas cap has been replaced and code keeps coming back. The system is holding pressure as it relieves itself when I remove the gas cap.

    Code does not come up unless I let the tank get under 1/ 2 full. I stick with GM parts for my Chevy Malibu 3. 5L as I' ve had the best results with them. At 260K miles my radio displayed a message to check gas cap and decided to replace it due to it being over 10 years old. Cant remember the code but when I looked it up it said to replace gas cap, when I replaced gas cap and reset the code it went away but k. read more Gm Tech ( Cam). A P0445 code usually indicates a bad seal on the gas cap or a defective cap. If you have rust forming around the filler tube, that would cause a large leak. If the O- ring on the gas cap is worn, distorted, or missing, that would also be a large leak. If the gas cap has been sealed properly and the code still comes back on, the EVAP system needs to be inspected for points of leaks.

    This can be due to cracked hoses or parts ( like the canister) or an area in the car that has been damaged by rust, such as the fuel filler neck or the gas tank. Sorry to dig up an old post on here, but my 04' just flashed the message this morning, when i was driveing ( 40mph for about 5 miles) havent filled up for over a week, I think its strange since i can drive it/ run it with out a gas cap with no message. · Real world EVAP: How to diagnose a P0455 code. not a matter of driver error,. gas cap has been sealed properly and the code still comes. What Does P0449 Code Mean? 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). Under precise operating conditions. The check engine light came on and I checked the code. alarm The check engine light came on and I checked the code, it' s a EVAP solenoid valve high purge.

    Replaced the gas cap, cleared the alarm but it comes back after a short amount of driving. A P0457 gross leak detected code is often the result of the vehicle' s operator not tightening the refueling cap correctly after refueling. The same is true for the P0455 large leak fault code. The dreaded GAS CAP code! I see many posts here about how to fix ( the dreaded GAS CAP) EVAP codes. Today I am going to educate you as to the functions and diagnostics involved in Evaporative Emissions issues and what the codes mean. Upon displaying the codes, first be sure that the P0420 is the only code present; if not, diagnosis of the other codes is necessary, as they may be causing the P0420 code. Almost every car owner that has ever filled up a gas tank has encountered a “ Check Engine” light that comes on when the gas cap has not been closed properly. The on- board diagnostics, or OBD, code P0442 can often be fixed by tightening the gas cap or replacing the gas cap. A: The code P0455 means an EVAP system leak detected. As always, check the gas cap first. A common problem in this vehicle is a bad vent control valve. A Few Reasons a Gas Cap can turn on the Check.

    System Leak Codes P0442, P0455, P0440 On A Basic GM EVAP. Once you eliminate the impossible, whatever remains, no matter how improbable, must be the truth. " - Sherlock Holmes. · Anyone have “ tighten gas cap” come up on the dash? Just look at your gas cap. I had kept getting codes on my sunfire intermittently,. P1403 Exhaust Gas Recirculation System Valve 1 - Read Our Article on EGR Valve Codes For Help With This GM Check Engine Light Code P1404 Exhaust Gas Recirculation System Valve 2 - Read Our Article on EGR Valve Codes For Help With This GM Check Engine Light Code. So the tighten fuel cap warning came on in the window where the odometer usually reads, went off in a few minutes. The next day this happened again and then the engine light came on later. Test at the dealership showed leak, recapped the gas tank, dealership cleared the code and it was fine. The cause of code P0440 can be a loose gas cap which is the most common reason for the code. Code P0440 is also set if any component in the fuel vapor system is leaking like a gas cap vent, vent valve, carbon canister, fuel filler neck, or any of the many fuel vapor recovery components.