Cummins

488

UnclassifiedCooling

What This Code Means

Battery voltage below 11 V; Battery does not maintain a charge; Battery voltage is high; Engine intake manifold temperature has exceeded 185 °F (85 °C) for more than 90 seconds; Engine has overheated; Intake manifold temperature has risen above the shutdown trip point; Derate lamp active; High Intake Manf 1 temp message displayed; Engine hot shutdown has occurred; Cooldown timers were bypassed; Warning lamp active; Engine Hot Shut Down message displayed; Communication between the engine control (ECM) and the PowerCommand 3.3 control has been severed; Shutdown lamp active; CAN Data Link Failure message displayed; Control is in Battle Short mode; Battle Short Active message displayed; Triggered configurable customer input alarm (e.g., Low Fuel Day Tank, Water In Fuel, Ground Fault)

Possible Causes

  • •Active E-Stop button
  • •Battery charger overcharging battery
  • •Battery is old
  • •Battery not completely charged
  • •Battery voltage above high battery voltage threshold
  • •Battle Short mode manual activation to bypass fault shutdowns during emergencies
  • •Configurable input condition met
  • •Coolant level is below specification
  • •Enclosure air discharge blocked
  • •Enclosure air intake blocked
  • •Fan belt is broken or loose
  • •Faulty engine DC alternator
  • •High ambient temperature
  • •Incorrect battery voltage setup
  • •Large load
  • •Operator pressed the Emergency Switch before the generator set completed the cooldown operation
  • •Operator pressed the Stop button before the generator set completed the cooldown operation
  • •Radiator blocked

Suggested Actions

  1. 1Add coolant as necessary.
  2. 2Allow the engine to cool down completely before proceeding (if the engine can be stopped)
  3. 3Check coolant level.
  4. 4Check the Input requirement details and correct the condition
  5. 5Contact authorized service technician if in doubt
  6. 6Ensure the E-Stop button is not active
  7. 7If possible, investigate any fault codes that are being bypassed
  8. 8If the previous steps do not resolve the problem, contact your Cummins service representative.
  9. 9Inspect enclosure air intake for dirt, debris, or obstructions.
  10. 10Inspect radiator for dirt, debris or obstructions.
  11. 11Make sure the correct batteries are installed.
  12. 12Make sure the correct battery charger is installed.
  13. 13Program input functions using the InPower service tool or by accessing the Setup menu
  14. 14Reduce loads or recirculation of discharge air to generator in elevated ambient.
  15. 15Remove blockage or snow/ice buildup as applicable.
  16. 16Replace the battery.
  17. 17Reset the Local/Remote Emergency Stop
  18. 18Review fault code 151 correction list for other possible causes
  19. 19Run the generator set at 10% or less load for three minutes before engine shutdown to avoid hot shutdowns
  20. 20Using a voltmeter or multimeter, determine if the voltage is below 11 V. If so, recharge the battery.

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