LOW COOLANT ALARM
UnclassifiedCooling
What This Code Means
Hard start; Rough running; Black smoke; Reduced power output; Coolant seeping at joints; Engine overtemperature; Slow crank
Possible Causes
- •Faulty fuel injectors (B3.3 inline-4)
- •Loose or damaged cooling system hoses and clamps
- •Starting battery bank failure
- •Extended no-load storage
Related Cummins Fault Codes
LOW COOLANT LEVELLOW COOLANT LEVEL ALARMINTERMITTENT FAULT CODESLOW COOLANT TEMPERATURE WARNINGINJECTOR FAULT CODESLOW LUBE OIL PRESSURE WARNING/SHUTDOWNHIGH LUBE OIL TEMPERATURE WARNING/SHUTDOWNLOW OIL PRESSURE WARNINGHIGH ENGINE TEMPERATURE WARNING/SHUTDOWNNUISANCE OVERCURRENT TRIPSFAIL-TO-START FAULTOVERSPEED SHUTDOWN
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Get a diagnosis walkthrough for LOW COOLANT ALARM on your specific Cummins unit — cited to the OEM manual, not a forum guess.
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