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SPN 84 FMI [2,9,10,19] How to Troubleshoot

Posted by David T on August 2, 2022

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SPN 84 is a diagnostic trouble code for wheel based vehicle speed data erratic.

FMI 2 – Intermittent Or Incorrect

FMI 9 – Abnormal Update Rate

FMI  10 -Abnormal Rate Of Change

FMI 19 –  Received Network Data In Error

Troubleshooting:
Verify (ECM) electronic control module calibration
Clean (VSS) vehicle speed sensor connections

Other SPN codes:

  • SPN 4334 FMI [2-18]
  • SPN 3264 FMI [0-16]
  • SPN 3226 FMI [2-20]
  • SPN 729 MFI [3,4,5]
  • SPN 639 FMI [2-19]
  • SPN 111 [FMI 1 – 18]
  • SPN 103 FMI [2,15,16,18]
  • SPN 91 FMI [2-19]
  • SPN 84 FMI [2,9,10,19]
  • SPN 101 FMI [0 – 16]
  • SPN 3058 FMI[10,16,18]
  • SPN 641 FMI [7 – 31]
  • SPN 1761 FMI[1 – 18]
  • SPN 190 FMI [0, 2, 16]
  • SPN 3216 FMI 20
  • SPN 5246 FMI 0

 

David T

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