spn 520371 fmi 16

Discussion in 'Freightliner Forum' started by AlexD13, Oct 18, 2021.

  1. AlexD13

    AlexD13 Light Load Member

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    Jun 13, 2016
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    hi everyone, changed my DPF filters and the next day , I got a check engine light on. No codes until I got to mechanic and he pulled this up. wondering what it might be . He is not quit sure either but its something to do with poor def quality.
     
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  3. Ross_Tech

    Ross_Tech Light Load Member

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    Aug 31, 2021
    Michigan
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    Did you replace the DPF's for preventive maintenance, or was there a fault?
     
  4. AlexD13

    AlexD13 Light Load Member

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    Jun 13, 2016
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    Preventative Maintenance
     
  5. Ross_Tech

    Ross_Tech Light Load Member

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    120
    Aug 31, 2021
    Michigan
    0
    I would verify that the DOC inlet temp sensor wasn't damaged and pull the cover off and check for leaks, and that the clamps are situated correctly. It can be tricky in a one box to get the inside front clamp on there properly.
     
    AlexD13 Thanks this.
  6. AlexD13

    AlexD13 Light Load Member

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    Jun 13, 2016
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    I will have the mechanic look into it. I haven’t lost power or anything. Im hoping its minor
     
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