Check Gas Cap Light Fix

Lear how to diagnose your "check gas cap light" or a check engine light that has EVAP codes. I also explain how the EVAP system works in simple terms so you can get a basic understanding of what it does.

EVAP System Check Engine Light Codes:

P0440 Evaporative Emission Control System Fault
P0441 Evaporative Emission Control System Incorrect Purge Flow
P0442 EVAP Emission Control System Leak Detected (small leak)
P0443 EVAP Emission Control System Purge Control Valve Circuit
P0444 EVAP Purge Control Valve Circuit Open
P0445 EVAP Purge Control Valve Circuit Shorted
P0446 Evaporative Emission Control System Vent Control Circuit
P0447 EVAP Emission Control System Vent Control Circuit Open
P0448 EVAP Emission Control System Vent Control Circuit Shorted
P0449 EVAP Emission Control System Vent Valve/Solenoid Circuit
P0450 Evaporative Emission Control System Pressure Sensor
P0451 EVAP Emission Control System Pressure Sensor
P0452 EVAP Emission Control System Pressure Sensor Low Input
P0453 EVAP Emission Control System Pressure Sensor High input
P0454 EVAP Emission Control System Pressure Sensor Intermittent
P0455 EVAP Emission Control System Leak Detected (gross leak)
P0456 EVAP Emission Control System Leak Detected (small leak)
P0457 EVAP Emission Control System Leak Detected (fuel cap)

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Disclaimer:
Due to factors beyond the control of ChrisFix, I cannot guarantee against improper use or unauthorized modifications of this information. ChrisFix assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. ChrisFix recommends safe practices when working on vehicles and or with tools seen or implied in this video. Due to factors beyond the control of ChrisFix, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not ChrisFix.

[zerosheen]

I like how every time something goes bad on my car, Chris makes a video about it hours later. Thanks.

[emirvilla]

No way I’m a subscriber for years and I haven’t notice that Chris revealed his face in this video

[jrschilberg]

Probably one of the best explanation videos on YouTube! Nicely shot, edited, fabulous graphics, excellent information from someone who knows the subject, and the audio is GREAT! Thanks for the fine explanation!

[kewebco]

FANTASTIC! Clear, relevant, precise and concise. Excellent use of graphics, speech pace, camera shooting and perfect deliverance of content. Enough, and no extra.
Watched lots of YT since it launched. I'm not a subscriber to stuff.
This vid changed that.

[bytefree]

Didnt know that the fuel system had such a complex part built in. Very informative. Never ever heard about vacuum leak detection in a car. The explanation was perfect. Cheers

[jmhepp]

I had a similar problem on my 07 caravan, but my cap was still in good shape, the o ring was a bit dry, so I tried something out. I went and bought a $1 tube of chapstick, applied some to the o-ring and the mouth of the filler tube careful not to get any down the tube. I put the cap on and removed it several times to work the chapstick in and low and behold, after about 1 or 2 min of running the check engine light went out, and the gas cap light on my odometer went out as well, that was over 4 months ago and its yet to come back on, just thought I'd share something I stumble across that MAY work for others as well :) Keep up the good videos!

[AthenaGM]

You are amazing! I dislike having any lights on my dash on. Not too long ago this happened (check engine light on. My car make/model does not have the gas cap light) long and behold it needed to be replaced..and here I thought I needed an expensive repair, lolz! Tnks for sharing!
Athena-AGM

[ScooterVille]

Your knowledge is uncanny.  It's amazing how much you know about the things that most people experience as "issues".  I love the way you explain everything in simplest forms, and make it very easy to understand, and I work for an auto parts store and your version is still easier to understand.  Did you ever think about teaching??  Great job as always brother, keep up the excellent work.

[kovacsst]

One of the best youtube video's I've ever seen. Well spoken, great flow of information and I really learned more than I was asking. Thanks Chris. Keep up the good work.

[walkingfreak]

Oh my god he showed his face! Good tip! i need to get me one of those locking gas caps. 

[rulizify]

ChrisFix Sir, you are doing an amazing job. You're videos are so thorough and concise. You provide us with the right information but you don't overload. If you taught a class on auto mechanic then I would take it haha.

[Mopar]

Wow!!! Thanks for saving my money, last year I took my car to the dealer and they give me lots of none sense and they want $350 to fix this problem with my gas cap light always on, so I never fixed it until this now with your help, I just changed my bad gas cap and the light is off . Thanks Chris !!!!

[TerryB]

Great video. In all the cars I've had I only had a Check Engine light instead of a separate Check Gas Cap light. I've noticed that if the problem is the gas cap not being tight enough, once you tighten it some more, it may take a day or so of driving before the Check Engine light goes off.

[guomichael]

Hi, Chris, love all your videos. Learn a lot. I'm driving a 2015 jeep grand cherokee. It has a capless fuel tank. Check engine light is on sometimes after I fuel my car. How can I fix this problem? Thanks

[channa]

Whew!!!..Thank you so much Bud!.I have a gas cap that wouldn't engage (click) and I didn't think it was too big of a deal.Yesterday my gas cap and check engine light came on and I thought "Uh oh, looks like I'm taking the bus for a while" because I'm between jobs and I have an interview set for today!.I'm gonna try this because nothing is overheating and my friend noticed a funny smell coming in from the vent and remarked on it.Worth a shot anyhow.

[Jackie-cwyw]

Thank you so much for all your videos! So many things about cars scare me & after watching your videos, I'm able to relax & not be stressed out & panicky every time the check engine light comes on. I have done a few things on my car that I wouldn't even have attempted before.

[samjohnson]

Good job Chris. You get better with every video you share, thanks, quite informative. I never knew that a gas cap was so important.

[iceman]

Thanks for the video. I have a 2007 Sub with only 74 miles. Check engine light turned on with OBD code P0446 (Evaporative Emission System Vent Control Circuit 1/1. I've replaced the gas cap, vapor vent canister valve, vapor jumper wire and the Emissions Vapor Canister Purge Valve Solenoid EVAP Vent ( I don't think it's necessary but I did it anyway). Cleared it and the check engine light is gone but after driving 93 miles, the I/M is still not ready with a combo drive of city and fwy. Drove it for another mile and after 6 cycles, when I ran the OBD at 94 miles to see if it's I/M ready, unfortunately I see the same "pending" P0446 code despite driving it up to 110 miles hoping it will clear on it's own. So I decided to erase the pending code/OBD and did the same thing again. Drove it up to 92 miles without check engine, still not I/M ready and at 94 miles later it's still not ready and the "pending" p0446 code is back. Should I continue driving it in hope that it will go away since it's not giving me a permanent OBD code? I'd appreciate any suggestions on what to do so I can get this smog. Btw, I/M reads as: PdDTC (1), Evap (X), Cat (X) and the rest has a check mark/ready.

[MrRobfriv]

Wow! Thank you so much this was honestly a huge help. I drive a Dodge Nitro and I got the light (found out it is a gas cap light).
Thank you!

[leerob]

7 years ago?! Damn bud! Using the top tech of the day! This is better quality than most channels have today! Hahaha