CODE 13
UnclassifiedFuel
What This Code Means
Low fuel level; Dirty air filter; Slow cranking speed; Fuel leak; Air leak; Under Voltage; Control is unable to maintain rated voltage
Possible Causes
- •Low fuel level in fuel tank
- •Dirty air filter element
- •High oil viscosity
- •Loose fuel fitting
- •Excessive connected appliances (especially air conditioners and battery chargers)
Suggested Actions
- 1Fill the fuel tank
- 2Prime the engine fuel system by positioning the control switch to STOP/PRIME for 30 seconds
- 3Replace the air filter
- 4Replace engine oil with oil of proper viscosity for the ambient temperature
- 5Tighten any fuel fitting
- 6Reprime the engine fuel system by positioning the control switch to STOP/PRIME for 30 seconds
- 7Reduce the number of connected appliances, especially air conditioners and battery chargers
- 8Review load management in Loading the Generator Set
ASK RUDY ABOUT THIS FAULT
Get a diagnosis walkthrough for CODE 13 on your specific Cummins unit — cited to the OEM manual, not a forum guess.
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