Cummins

F4

UnclassifiedFuel

What This Code Means

Damaged fuel injectors

Possible Causes

  • •Fuel contamination
  • •Water intrusion

Suggested Actions

  1. 1Perform annual injector performance testing
  2. 2Perform fuel system pressure checks
  3. 3Annual injector performance testing
  4. 4Fuel system pressure checks

Related Cummins Fault Codes

CODE 15CODE 14CODE 13CODE 12ALARM ID 3336F415F450F1F500EMERGENCY STOPF525
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