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  1. Join Date
    Apr 2014
    Posts
    13
    #1
    Good morning!

    Patulong sana sa problem ng Kia Carnival 08. Car wont start. OBDII reading is P0685.
    ECU/PCM power relay curcuit open. 1 1/2 months ba nka garahe ung van.

    Thanks!

  2. Join Date
    Nov 2009
    Posts
    3,002
    #2
    Quote Originally Posted by Paul77 View Post
    Good morning!

    Patulong sana sa problem ng Kia Carnival 08. Car wont start. OBDII reading is P0685.
    ECU/PCM power relay curcuit open. 1 1/2 months ba nka garahe ung van.

    Thanks!
    Potential causes for this code to set are:
    A defective PCM power relay
    A blown fuse or fusible link Corroded or damaged wiring or wiring connectors (especially near the PCM relay)
    Faulty ignition switch
    Partially or totally disconnected electrical terminal at the ignition switch
    Loose or corroded battery cable ends

    Read more at: P685 ECM/PCM Power Relay Control Circuit Open
    Copyright OBD-Codes.com

  3. Join Date
    Jan 2015
    Posts
    10,439
    #3
    How's the batt?

    Sent from my SM-G950F using Tapatalk

  4. Join Date
    Mar 2006
    Posts
    12,863
    #4
    Check the Main relay

    when you look into the abyss, the abyss looks into you

  5. Join Date
    Apr 2014
    Posts
    13
    #5
    Quote Originally Posted by 12vdc View Post
    Potential causes for this code to set are:
    A defective PCM power relay
    A blown fuse or fusible link Corroded or damaged wiring or wiring connectors (especially near the PCM relay)
    Faulty ignition switch
    Partially or totally disconnected electrical terminal at the ignition switch
    Loose or corroded battery cable ends

    Read more at: P�685 ECM/PCM Power Relay Control Circuit Open
    Copyright OBD-Codes.com


    Main relay and fuse are ok.

    Battery is 1month old. Cleaned the terminals already.

    Ung engine nag ccrank pero d lng mag start. Parang mag sstart na ung crank nya

    - - - - - - - - - - - - - - - - - - - - - -

    Quote Originally Posted by travajante View Post
    How's the batt?

    Sent from my SM-G950F using Tapatalk
    Batt sir is new. Last oct lng nag palit.

  6. Join Date
    Apr 2014
    Posts
    13
    #6
    Quote Originally Posted by baludoy View Post
    Check the Main relay

    when you look into the abyss, the abyss looks into you
    Main relay is ok. Abyss?

  7. Join Date
    Jan 2015
    Posts
    10,439
    #7
    Check fuel pressure....if low or none, proceed to filter, then pump.

    Sent from my SM-G950F using Tapatalk

  8. Join Date
    Apr 2014
    Posts
    13
    #8
    Quote Originally Posted by travajante View Post
    Check fuel pressure....if low or none, proceed to filter, then pump.

    Sent from my SM-G950F using Tapatalk
    Fuel pressure is ok. Na try din namin ibleed. Ayaw pa din

  9. Join Date
    Jan 2015
    Posts
    10,439
    #9
    Quote Originally Posted by Paul77 View Post
    Fuel pressure is ok. Na try din namin ibleed. Ayaw pa din
    What was the pressure the pump was giving?

    Sent from my SM-G950F using Tapatalk

  10. Join Date
    Apr 2014
    Posts
    13
    #10
    Quote Originally Posted by travajante View Post
    What was the pressure the pump was giving?

    Sent from my SM-G950F using Tapatalk
    According to the mechanic of kia(casa) fuel pressure is ok pero wla silang device to measure it

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Help! Car wont start OBD P0685.