2720

UnclassifiedCooling

What This Code Means

Problem 37; Problem 38; Problem 39; Problem 36; Over current cylinder 9 for one second; Over current cylinder 10 for one second; Under current cylinder 1 for one minute; Under current cylinder 2 for one minute; Under current cylinder 3 for one minute; Under current cylinder 4 for one minute; Under current cylinder 5 for one minute; Under current cylinder 6 for one minute; Under current cylinder 7 for one minute; Under current cylinder 8 for one minute; Under current cylinder 9 for one minute; Under current cylinder 10 for one minute; Internal ignition: no cam pulses detected after cranking for four seconds on gaseous unit; External ignition: no cam pulses detected; Internal ignition: missing crank pulses detected; External ignition: missing crank pulses detected; CANbus error reported by external ignition; CANbus error reported by Diesel ECU; Fuel level below 10% for greater than 60 seconds; Low coolant detected for greater than five seconds; Battery voltage level < 9.0 for 60 seconds;

Possible Causes

  • Over current cylinder9 Coil current too high for one second.
  • Over current cylinder10 Coil current too high for one second.
  • Under current cylinder1 Coil current too low for one minute.
  • Under current cylinder2 Coil current too low for one minute.
  • Under current cylinder3 Coil current too low for one minute.
  • Under current cylinder4 Coil current too low for one minute.
  • Under current cylinder5 Coil current too low for one minute.
  • Under current cylinder6 Coil current too low for one minute.
  • Under current cylinder7 Coil current too low for one minute.
  • Under current cylinder8 Coil current too low for one minute.
  • Under current cylinder9 Coil current too low for one minute.
  • Under current cylinder10 Coil current too low for one minute.
  • Internal Ignition Missing Cam Cranked for four seconds on gaseous unit, no cam pulses detected.
  • External Ignition Missing Cam No cam pulses detected by external ignition.
  • Internal Ignition Missing Crank Pulses Missing crank pulses detected by internal ignition.
  • External Ignition Missing Crank Pulses Missing crank pulses detected by external ignition.
  • CAN Bus CANbus error reported by external ignition.
  • CAN Bus CANbus error reported by Diesel ECU.
  • Coil current too high for one second
  • Coil current too low for one minute

Suggested Actions

  1. 1Problem 37
  2. 2Problem 38
  3. 3Problem 39
  4. 4Problem 36
  5. 5Problem 26
  6. 6The system detected battery voltage level < 9.0 for 60 seconds and has triggered the alarm.
  7. 7Refer to 'Problem 34 – Low Fuel Pressure' page 141
  8. 8Check Fuel Level
  9. 9Review alarm log and address active alarms
  10. 10Refer to 'Problem 26 – Low Coolant Level' page 138
  11. 11Refer to 'Test 115 – Oil Temperature Sensor (OTS) Resistance' page 179
  12. 12Refer to 'Problem 28 – Low/High Oil Pressure' page 138
  13. 13Engine runs with no O2 sensor faults (stuck open/closed) for 4 minutes to clear warning

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