2013 Cadillac CTS -Emission problems, scan shows issues but no CEL light or error codes?

Asked by Ron Apr 26, 2019 at 01:17 PM about the 2013 Cadillac CTS Coupe 3.6L AWD

Question type: Maintenance & Repair

I recently had error code 0442 show up on my 2013 Cadillac CTS after running over my gas cap. The gas cap could still screw on, but had noticeable damage. I have replaced the gas cap and reset the computer, which has made my CEL turn off. However, emission-type problems are still showing up when the vehicle is scanned with an OBD tool.. is it possible that the computer is bringing up false readings? Nothing seems to be wrong with the car. Haven't seen any puddles, no smell of gas, etc.

1 Answer
30,130

mikeatpriestlake answered 5 years ago

You might have another leak somewhere in the evap system, maybe a bad vent or purge valve. if your scan doesn't lead you anywhere, you might need to go to a shop that can do a smoke test on the evap system to detect the leak. Also not impossible that you have a bad sensor. Look under the hood for any cracked or damaged hoses too.

Mark helpful

Your Answer:

Related Questions

Shortcuts

Search Cadillac CTS Coupe Questions

CarGurus Experts

  • #1
    Auto_Adrenaline
    Reputation
    220
  • #2
    Phillip Dauzat
    Reputation
    140
  • #3
    taver91
    Reputation
    50
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Cadillac CTS
4 Great Deals out of 60 listings starting at $5,995
Used Cadillac CTS-V
3 listings starting at $54,995
Used Cadillac ATS
5 Great Deals out of 94 listings starting at $6,899
Used Chevrolet Camaro
16 Great Deals out of 467 listings starting at $10,995
Used Cadillac XTS
4 Great Deals out of 29 listings starting at $13,900
Used Chevrolet Corvette
28 Great Deals out of 765 listings starting at $15,900
Used Dodge Challenger
31 Great Deals out of 781 listings starting at $11,480
Used Cadillac Escalade
18 Great Deals out of 480 listings starting at $5,000
Used Chrysler 300
23 Great Deals out of 538 listings starting at $6,898

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.