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SPN 157 FMI 18 Fault Code [Explained]

Posted by David T on July 31, 2022

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SPN 157 FMI 18 engine fault code is due to ECM detecting low fuel pressure.

Causes:

  • Bad fuel pump
  • Dirty fuel
  • Bad fuel filter
  • Pressure sensor failed

 

infographics

Related posts:

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David T

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