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Communities > Diagnostics > USA Cars > C1239 Emissions rolls test active
C1239 Emissions rolls test active

843 Views 2 Replies Latest reply: 2023-10-17 13:07:04


  •   Level 1   
    (5) points
    TomWaxler
    2021-10-28 22:50:22
     can i turn off emission rolls test on 2006 dodge charger with maxidiag808 pro? just changed wheel speed sensors and tone rings on the rear of vehicle. now im getting the c1239 code. thanks for any support,it will greatly be appreciated

  •   Level 2   
    (11) points
    Victor Ramos

    2023-10-17 03:30:00 (Reply to:TomWaxler)

     I'm in the same situation with a 05 Jeep Grand Cherokee. I was looking to see if I can run a test of the EVAP system and activate the emission roll test. Now the "Brake and ABS light are on with C1239 emission roll test active and I can not delete the with the my MP808MS.

  •   Level 9   
    (3264) points

    2023-10-17 13:07:04 (Reply to:Victor Ramos)

    Hi,check the rear left speed sensor, also the rotor rear left. Check for correct sensor
    installation. Do a deep reset of the system.
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