Results 1 to 5 of 5

Thread: OL-Fault

  1. #1
    Senior Member NewV's Avatar
    Join Date
    Nov 2006
    Posts
    118

    Default OL-Fault

    I'm tweaking my MAF in Open Loop and for a reason I have yet to figure out my SAE.A and SAE.B FUELSYS status both go from 'OL' to 'OL-Fault'. Once they change status they never return to 'OL'. It always happend pretty early in the log around frame 500.

    Tune is attached if anyone wants to look. Anybody know what this status code means?
    Attached Files Attached Files
    2005 CTS-V w/tuner wannabe driver

  2. #2
    Lifetime Member SSpdDmon's Avatar
    Join Date
    Jun 2005
    Posts
    1,558

    Default

    I didn't check the tune, but I'll bet it's because you didn't kill your O2 sensor codes. Under DTC Processing Enablers, you need to kill the HO2S codes if one of the front O2 bungs is being used for your wideband. That way, the PCM doesn't keep looking for a signal from them.

    Check the DTC's to see if anything shows up...

  3. #3
    Senior Member NewV's Avatar
    Join Date
    Nov 2006
    Posts
    118

    Default

    I thought I caught them all, no more DTC codes are being thrown. Of course when I got the DTC codes before turning off I did not get 'OL-Fault', go figure.

    I'll double check as I do have a wideband in place of NB.
    2005 CTS-V w/tuner wannabe driver

  4. #4
    Senior Member NewV's Avatar
    Join Date
    Nov 2006
    Posts
    118

    Default

    I'm getting DTC codes for P0134 and P0135 which I have set to 'NO MIL'. It does not throw a check engine light though. I noticed these have settings in the 'Engine DTC Processing Enablers' table as well. They are currently set to 'B: 2 Trips Emissions Related', should I set them to 'X: Not Reported'?
    2005 CTS-V w/tuner wannabe driver

  5. #5
    Lifetime Member TAQuickness's Avatar
    Join Date
    Jan 2005
    Posts
    2,940

    Default

    yes. that will prevent the DTC


Similar Threads

  1. Fault
    By GMLSI in forum General (Petrol, Gas, Ethanol)
    Replies: 9
    Last Post: November 3rd, 2007, 04:56 AM
  2. Possible EQ/AFR converter fault in 7.4.2
    By hquick in forum General (Petrol, Gas, Ethanol)
    Replies: 0
    Last Post: April 28th, 2007, 09:31 AM
  3. cam sensor fault
    By dobsons dyno tune in forum General
    Replies: 3
    Last Post: October 12th, 2006, 02:43 PM
  4. CL-Fault ?
    By superls1 in forum General (Petrol, Gas, Ethanol)
    Replies: 4
    Last Post: April 18th, 2006, 08:34 AM
  5. OL-Fault?
    By Bruce Melton in forum General (Petrol, Gas, Ethanol)
    Replies: 2
    Last Post: April 23rd, 2005, 04:43 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •