Threw a CEL

Discussion in 'Modifications & DIY how-to' started by cannarella, May 22, 2007.

  1. cannarella

    cannarella Member

    On the way to the Summit Car show last night I threw a CEL. Luckily I was running ECUExplorer on the laptop and could immediately look at it. It is a P0420 Catalyst System Efficiency Below Threshold or something like that. I am running a gutted UP, TXS Stealth Back with high flow cat, and stock axle back. I was running an openECU map, but it was giving me trouble with my IAM. So to see if it was the map or my car I put the OEM map back on last Friday and the IAM has stayed at 16 where the others would have dropped by now. I did some Googling and found this. http://www.scoobymods.com/forums/showthread.php?t=5468

    Am I going to hurt anyhting by running with this until I can address it or is it just complaining?
     
  2. moose

    moose Infina Mooooooose!

    Why don't you just use Enginuity or something to turn off that CEL on the map you're running now?
     
  3. cannarella

    cannarella Member

    I have not dove that deep to learn that just yet. I guess I can open the map in Enginuity, disable it, and save the map?

    I found this also. I guess this is why you want to change the closed loop setting before upgrading exhaust? http://findarticles.com/p/articles/mi_qa3828/is_200606/ai_n17177314

    Could I just fine the parameter to change for the closed loop setting on the OEM map and see what happens? Again is this hurtng anything?
     
  4. moose

    moose Infina Mooooooose!

    What I would do is first disable the CEL (it's literally a checkbox), then if you want to mess with CL/OL cutover just copy the values (it's one or two small tables) from the modified openecu map over to your stock one...
     
  5. cannarella

    cannarella Member

    Yup that is what I was thinking. Thanks
     
  6. cannarella

    cannarella Member

    Ok so I was driving back from lunch and after reading Will's call to check oil I had that on my mind. I pull in to my spot that will be shady by this afternoon and am sitting there and I noticed that my CEL has gone away. This has happened while at lunch. I did not notice when but I guess that is a good thing unless the light burned out... Weird :squint:
     

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