Multiquip

DEF SEVERE INDUCMT

UnclassifiedEmissions

What This Code Means

Alarm Lamp ON; Shutdown Lamp ON; DEF Indicator ON; Alarm Lamp Flashing; Engine Shutdown (Restart available); Engine Shutdown (Low idle only); Engine Shutdown (Restart unavailable); Malfunction Indicator Flashing; Malfunction Indicator ON; Unit enters intermittent operation; Emergency shutdown activates; DEF Indicator Flashing; Stage 1 Warning Level 1; Stage 2 Warning Level 2; Stage 3 Shutdown; Flashing DEF Indicator; Intermittent operation; Emergency shutdown; DEF indicator is displayed ON; Alarm lamp is flashing; DEF Low Refill DEF pre-alarm screen message is displayed; DEF Presvr Inducmt alarm screen message is displayed; Unit enters emergency shutdown; Engine restart is unavailable; Alarm lamp is displayed ON; DEF Severe Inducmt alarm screen message is displayed; DEF indicator is displayed on the digital controller; DEF Indicator is ON; Alarm Lamp is flashing; Controller displays 'DEF Fluid Low PA' message; Controller displays 'DEF Severe Inducmt' message; Alarm Lamp is ON; Unit can

Possible Causes

  • •No supply of DEF
  • •Tampering
  • •Improper usage
  • •DEF level below 20%
  • •DEF level below 15%
  • •DEF level below 10%
  • •DEF level below 10% for over 30 minutes
  • •DEF level below 5%
  • •Use of poor quality DEF
  • •Problems with DEF dosing
  • •Disconnection of sensors
  • •Ignored warning levels
  • •DEF tank level is below 10%
  • •DEF tank level is below 5%
  • •DEF level has reached 0%
  • •DEF quality is poor
  • •DEF level is below 20%
  • •DEF level is below 10%
  • •DEF level has remained below 10% for 30 minutes

Suggested Actions

  1. 1Perform inspection and repair promptly before the engine is restarted
  2. 2Replace the DEF filter (located in the urea SCR system supply module) every 1,000 hours of operation
  3. 3Refer to the Replacement of DEF Filter section in the Isuzu engine owner’s manual
  4. 4Activate Escape mode to restart the unit (note: unit will only run for 30 minutes)
  5. 5Check active diagnostic trouble codes (DTC)

Related Multiquip Fault Codes

DEF SEVERE INDUCMT ADEF SEVERE INDUCMT DEF LOW REFILL DEFDEF QUALITY POORDEF SEVERE INDUCMT DEF LOW REFILL DEF ESCAPE MODEDEF PRESVR INDUCMT DEF LOW REFILL DEFDEF SEVERE INDUCMT EXHAUST SYSTEM ERRDEF PRESVR INDUCMT ADEF SEVERE INDUCMT EXHAUST SYSTEM ERR ESCAPE MODEDEF PRESVR INDUCMTDEF TAMPERINGDEF LOW REFILL DEFDEF TANK < 0% SD REFILL DEF
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