Wells Dodge EVAP Troubleshooting and Repair P0442 P0455

www.wellsve.com This video shows how to diagnose an EVAP leak on a 2002 Dodge Caravan with a P0442 and P0455 trouble code. We utilize a smoke machine to pin point the problem areas. “The information presented in this program is based on a specific diagnostic case and might not directly apply to the vehicle you are repairing. We do not represent or warrant that the information presented is complete or error free. Please take all safety precautions. We disclaim any and all liability for losses, injuries or damages in connection with your repair.”

CHECK ENGINE CODE, P0445, P0446, P0171,CHEVY EQUINOX, 2006

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27 Responses to Wells Dodge EVAP Troubleshooting and Repair P0442 P0455

  1. ladybugboats says:

    Good stuff

  2. cfitzp52 says:

    ok..will do, thanks!

  3. markjhicks says:

    No the oil cap has nothing to do with a EVAP issue. Be sure to check those vacuum type hoses.

    Mark Hicks
    Wells Vehicle Electronics

  4. cfitzp52 says:

    I haven’t done a smoke test yet, but I did notice the oil filler cap wasn’t as tight as it should be. I tightend it, and a while later the mil lamp went off. Would the oil cap even make a difference with this?

  5. cfitzp52 says:

    Ok, I’ll check as soon as I can and let you know! Thanks!

  6. markjhicks says:

    It is common for hoses under the hood similar to the ones in the video to leak or by the canister. Let me know what you find.

    Mark Hicks
    Wells Vehicle Electronics

  7. cfitzp52 says:

    Sorry, my “6″ key was stuck. It’s a p0456 for a 5.7 hemi, which calls it a very small leak in the system. I actually am not sure it was also a p0444, it possibly was a p0442, this also was a very small leak. I got this 0442 code once, the others have been 0456. Thanks!

  8. markjhicks says:

    What size engine do you have? Is that a P0450? I looked up a P0444 for an 04 Dodge Durango with a 5.7 and the code was not a good code.

    Mark Hicks
    Wells Vehicle Electronics

  9. cfitzp52 says:

    thats p0456…sorry my “6″ key was stuck!

  10. cfitzp52 says:

    Hi there, would you reccommend the same procedure for a p045 very small leak code for a 04 limited durango? I have replaced the gas capp and still have a dtc. I did get 1 p0444. But mostly it’s the p045. Any special area to consider? Also, will this cause misfires at all? Thank you!!!

  11. skyboss9111 says:

    Wow! Very informative…I will have a look when I get home tonight. My codes just turned on my ’02 Grand Caravan 133K miles this morning, but I have been noticing a whistling sound lately (sounds like a vacuum leak) that fades slightly when the throttle is pressed, but is very apparent at idle. Does this sound like it’s the problem?

  12. skyboss9111 says:

    Wow! Very informative…I will have a look when I get home tonight. My codes just turned on my ’02 Grand Caravan 133K miles this morning, but I have been noticing a whistling sound lately (sounds like a vacuum leak) that fades slightly when the throttle is pressed, but is very apparent at idle. Does this sound like it’s the problem?

  13. markjhicks says:

    Thank you for the kind words and for taking the time to write them. It was our pleasure!
    Take Care,
    Mark Hicks
    Wells Vehicle Electronics

  14. toani08 says:

    I have a Dodge Dakota which had the same two codes shown here. I was just about to go to a mechanic, but then decided to look for a video and see if I could find it. This video was amazingly helpful. I did a visual check on all of the locations indicated in this video and found that a hose exiting from the purge solenoid to have a tear. This video just saved me both time and money. Thanks a lot!

  15. markjhicks says:

    The P0455 will normally not cause the engine to shut down. When the engine stops the vacuum in the brake booster is lost and that will cause your brake pedal to get hard to push. For the P0455 look for cracked hoses near the EVAP canister it is a very common problem. As far as the engine shut down, try to determine if it a fuel or spark issue. If you need further assistance please let me know.
    Mark Hicks
    Wells Vehicle Electronics

  16. 3000dekota says:

    Hello mr hicks. the truck that am having trouble with is the dodge dekoat 4.7 2002 4×4 cub cab. i did change the gas cap but the the only problem am still having is the p0455. I also wanted to know if a large leak would cause a truck to shut down or make the break pedal to go hard once it shout down.

  17. markjhicks says:

    I am happy to help you the best I can, but first I will need the year and engine size of your truck.

    Mark Hicks
    Wells Vehicle Electronics

  18. 3000dekota says:

    Hello Mr. Hicks, i have the same similar problem as shown on your vid my dodge dekota reads a the code P0455 for evap leak, i changed the gas cap but still get the code, i also had it smoked out but the guy i went to did not find any leaks. my only problem with my truck is that it stall when ever i make a turns or come to a stop. any suggestion would be appriciatec.

  19. talonawdtsi90 says:

    Would a leaky fuel pump seal cause a P0442 on a 2003 Grand Cherokee? I’ve had it smoke tested and fixed the purge valve. But, it is still showing the code.

  20. sergiotamez7 says:

    I have a jeep grand chereoke 2001 v6. I took my car to auto zone and the gave me the 2 codes but when i drive on the freeway i noticed that my car doesnt switch to 2nd gear it stays on 1st. So i thought the leaks were the probelm.

  21. markjhicks says:

    If you are asking if the leaks in the EVAP system could noticeable decrease engine power, the answer is no. What is your vehicle, engine and problem you are experiencing? I might be able to help you.

    Mark Hicks
    Wells Vehicle Electronics

  22. sergiotamez7 says:

    Can the leaks decrease the speed of ur car?

  23. markjhicks says:

    Got it. Thanks, for the life of me I could not figure out what he was talking about. But he is right it is 140,000 miles not 104,000 like I said in the video. Thanks for clearing this up.

    Mark Hicks
    Wells Vehicle Electronics

  24. NunyaBizzznesss says:

    he is referring to the odometer readout at 0:20

  25. sp33m says:

    This video is awesome — took the cost of resetting my engine light down from $120 to $1.48. Replaced cracked hoses under the air filter, good to go. Thanks dude!

  26. ss396rat says:

    Yes because it would be leaking.air,

  27. Shockern003 says:

    would a broken hose case a check engine light?

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