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flash code 63 help plz

Discussion in 'Trucks [ Eighteen Wheelers ]' started by free2fly973, Oct 22, 2013.

  1. Oct 22, 2013 #1
    free2fly973

    free2fly973 Light Load Member

    95
    11
    Mar 9, 2012
    Oklahoma
    0
    Ive got flash code 63 flahing on shut down engine light (red) and 16 on chk eng light (yellow) from what ive gathered 16 was coolant sensor that I replaced. And 63 is something to do with pwm? Would that be my abs? Last 6 of vin # is 889732. If It is abs can you tell me which wheel. I have 2 on front; one on each side. And 2 on 3rd axle.
    Thanks for any and all help.
    Also is there a place I can go to look up parts and other spacific info for my truck by vin? Local freightliner isnt fond of doing this.
     
    free2fly973, Oct 22, 2013
    free2fly973, Oct 22, 2013
    #1
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  3. Oct 22, 2013 #2
    porkchop_express

    porkchop_express Bobtail Member

    28
    14
    Oct 17, 2013
    0
    Sign up for an account at accessfreightliner.com and you can look up parts for any VIN# that you currently own.
     
    porkchop_express, Oct 22, 2013
    porkchop_express, Oct 22, 2013
    #2
  4. Oct 22, 2013 #3
    GrapeApe

    GrapeApe Road Train Member

    2,215
    2,211
    Jan 7, 2013
    0
    Flash code 63 is very difficult to diagnose without DDDL software. It is a pulse width modulation output issue. This may help http://dmbruss.com/images/Schematics/DDEC/63_Flash_Code_63_PWM_Fault.pdf , but without knowing the FMI, which output, or what that output is assigned to, you'll have to check them all.

    The 16 is a coolant level sensor fault. Flashing on the amber light, it's not active. It may be an old code that was repaired and not cleared, or it may be intermittent. 90% of the time, that code is a bad connection right at the sensor plug. Give a good tug on 1 wire at a time, if you pull it out, you need a new sensor plug on the harness.
     
    GrapeApe, Oct 22, 2013
    GrapeApe, Oct 22, 2013
    #3
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