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  1. #1
    Bobtail Member SnOoP's Avatar
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    Volvo Check ECU message?

    Anyone know what this error message is(Check ECU)? It pops un on the dash once in a while. I called the Volvo dealer and they had no idea.


  2. #2
    "Enemy of showers everywhere" wallbanger's Avatar
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    It's supposed to come up if there is a problem with the ECU [Engine Control Unit], the computer that runs the motor. However, Volvo's are notoriously finicky and that fault is most likely being caused by a short circuit somewhere.

    An 04 VNL670 I used to drive would spit out the same error; the local dealership was able to find the short and repair it.

  3. #3
    Bobtail Member SnOoP's Avatar
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    excellent, I appreciate the heads up. Did the truck run any better after the short was corrected?

  4. #4
    "Enemy of showers everywhere" wallbanger's Avatar
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    Well, it didn't run bad even with the short. The message would just come on the display, stay there for a few minutes and then disappear. And the truck never skipped a beat. Go figure?!

  5. #5
    Bobtail Member
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    Would suggest you check all of your battery connections - must be very tight - that was the source of my ECU issues.

  6. #6
    Bobtail Member SnOoP's Avatar
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    I hope my problem is that simple, thanks I take a look.

  7. #7
    Banned or Retired Scarecrow03's Avatar
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    This probably isn't going to be the only error message you get with your Volvo. I once drove from Youngstown, OH to Laredo, TX with an MID 32 (I think) error and alarm constantly going off. I took it into two company shops and three Volvo dealers along the way. All any mechanic could tell me was that it was happening due to a faulty ABS sensor on the trailer.

    Interestingly enough, that alarm will go off 18 times in a mile at 66mph.

  8. #8
    Bobtail Member SnOoP's Avatar
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    oh god... so far the only issues I have is the check ECU and the cruise control is not working. I figured it was a fuse cause the power mirrors went out at the same time replaced the fuse for the mirrors, but I cant find a fuse for the cruise control in the fuse box on top of the dash.

  9. #9
    Banned or Retired Scarecrow03's Avatar
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    Is this your truck or a company truck?

    Volvo's are (in my opinion) the smoothest riding short wheel base trucks out there. I also really like the quietness in the cab and all the driver friendly ergonomic controls. However, with all the electrical problems I had I would never buy one. The most shocking thing I experienced with mine was that the ground wire on the starter corroded in two at just 60,000 miles on the truck.

  10. #10
    Bobtail Member SnOoP's Avatar
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    this is my truck, I hate the idea of paying for electrcal issues cause they can take so long to diagnose. I have the VNL42T. its not that quiet and the fuel milage sucks. I expected to get around 7mpg. Pulled a load to KS from Ohio with about 8200 pounds and avaraged 6.3mpg. on the 475 ISX motor.

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