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SPN 3568 FMI 9Severity: Warning

SPN 3568 FMI 9: DPF dosing temp sensor voltage high – soot burn temp anomaly

Quick Answer

DPF dosing temp sensor voltage high – soot burn temp anomaly

Code
SPN 3568 FMI 9
Severity
Warning
Applies to
Check OEM application
Can I drive?
Driving suitability is not established by this code alone.

Common Symptoms

  • DPF regen temps strange
  • Frequent regen cycles
  • Smoke patterns vary

Likely Causes

  • Short to power
  • High temp path near sensor
  • Connector wet/damaged

Common Fixes

  • Check harness
  • Verify sensor function
  • Replace temp sensor
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What does SPN 3568 FMI 9 mean?

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DPF dosing temp sensor voltage high – soot burn temp anomaly

Detailed guide for SPN 3568 FMI 9

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Soot burn temp sensors ensure the regen hits the right window. High readings often point to harness shorts or moisture. :contentReference[oaicite:2]{index=2}

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