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Check engine light c15, just bought used truck any ideas on code

Discussion in 'Trucks [ Eighteen Wheelers ]' started by FordFan, Jan 23, 2014.

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  1. Jan 23, 2014 #1
    FordFan

    FordFan Light Load Member

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    31
    Jul 18, 2013
    0
    It's a MXs c15 at 475. Truck has 788k miles. Previous owner was a fleet owner and not much help. No issues for 200 miles bobtail. I hooked a load to it and test drove it around the block. All was fine. Started pulling up a hill in 8th gear (bogging motor intentionally), the check engine light came on. It stayed on for a long time then just flashed once and staid on. Motor pulled the same. I drove about another mile and it went off. All gauges fine and fluid levels. Pulled load about 5 more miles no issues.

    anyone have an idea? I'm about to take it out on the road and nervous.
     
    FordFan, Jan 23, 2014
    FordFan, Jan 23, 2014
    #1
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  3. Jan 23, 2014 #2
    cumminsISB

    cumminsISB Light Load Member

    176
    10
    Feb 5, 2011
    D'Lo, Ms
    0
    Depending on your truck. There is a way to pull the codes without a dealer or expensive cel tool. I have a kenworth and when my cel comes on I can pull the code by holding the cruise set toggle switch up. The cel begins to flash. 2 flashes=2 3 flashes=3 and so on. I then check online and find out what the code means. I also have the cat mxs c15. last cel I had was an actuator valve needed replaced.
     
    cumminsISB, Jan 23, 2014
    cumminsISB, Jan 23, 2014
    #2
  4. Jan 24, 2014 #3
    FordFan

    FordFan Light Load Member

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    Jul 18, 2013
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    Thanks. I tried the cruise checking. No light. It's an 06 peterbilt. Maybe all is ok.
     
    FordFan, Jan 24, 2014
    FordFan, Jan 24, 2014
    #3
  5. Jan 24, 2014 #4
    bubbanbrenda

    bubbanbrenda Road Train Member

    1,388
    650
    Feb 27, 2011
    Middletown,Oh.
    0
    If the light went out it's no longer an active code, but it will be stored in the ECM memory, you will have to plug in to get it. The cruise thing only works if the CEL is on.
     
    bubbanbrenda, Jan 24, 2014
    bubbanbrenda, Jan 24, 2014
    #4
  7. Jan 24, 2014 #5
    FordFan

    FordFan Light Load Member

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    31
    Jul 18, 2013
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    Fyi, I did not hold the button long enough initially. Code was a 55. Basically saying no codes. I stopped by local shop where they could hook up and check the truck. Problem was a VVA for cylinder 3.
     
    FordFan, Jan 24, 2014
    FordFan, Jan 24, 2014
    #5
  8. Jan 24, 2014 #6
    skateboardman

    skateboardman Road Train Member

    6,232
    5,706
    Jan 14, 2012
    flatbed heaven
    0
    it will be the connector, put a new updated connector with the oil seal on it and you will be fine, and don't bog the motor intentionally
     
    skateboardman, Jan 24, 2014
    skateboardman, Jan 24, 2014
    #6
  9. Jan 25, 2014 #7
    bubbanbrenda

    bubbanbrenda Road Train Member

    1,388
    650
    Feb 27, 2011
    Middletown,Oh.
    0
    55 in no "active" codes if the CEL was still on, it would have given the same code FordFan is correct probably a connector, I've replaced 3 so far, but have also since bought a complete wiring harness for next time, I've got 1.1mil on mine next bad connection problem is gonna get a complete harness, just because I've got a little over half the cost of the harness's in the 3 connector replacements, parts and labor.
     
    bubbanbrenda, Jan 25, 2014
    bubbanbrenda, Jan 25, 2014
    #7
  10. Jan 25, 2014 #8
    FordFan

    FordFan Light Load Member

    83
    31
    Jul 18, 2013
    0
    I done a little google searching on this. So normally the VVA is fine, it's just a bad connector where oil has contaminated?

    is it as simple as just swapping out the connector and leaving the VVA? Sure would be nice to fix this myself next time and save that labor rate.
     
    FordFan, Jan 25, 2014
    FordFan, Jan 25, 2014
    #8
  11. Jan 25, 2014 #9
    Cat sdp

    Cat sdp . .

    21,198
    75,232
    Apr 8, 2012
    Orion's Belt
    0
    With 800k on the truck I'd change the whole harness now. ( if you determine it's a connector problem)
     
    Cat sdp, Jan 25, 2014
    Cat sdp, Jan 25, 2014
    #9
  12. Dec 25, 2015 #10
    slimwitkins

    slimwitkins Bobtail Member

    3
    0
    Dec 25, 2015
    0
    Getting 2 flashes. Then code 52, 61. Then 3 or 31. What do they mean?
     
    slimwitkins, Dec 25, 2015
    slimwitkins, Dec 25, 2015
    #10
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