What does Cummins fault code 2637 mean?

Cummins fault code 2637 (SPN 5018 / FMI 11) indicates (isb, isc, isl).

Is Cummins code 2637 serious?

Cummins 2637 is generally treated as a moderate-severity fault. Have the engine and its wiring inspected, and confirm the reading with a J1939 diagnostic scan before clearing the code.

Is Cummins 2637 related to emissions or the after-treatment system?

Yes. Cummins 2637 is associated with the DPF after-treatment system on Cummins engines.

Cummins Fault Code 2637 (SPN 5018 FMI 11)

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Cummins 2637 (ISB, ISC, ISL)

What this code means

Emissions system

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Frequently asked questions

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