Multiquip

DEF PRESVR INDUCMT DEF LOW REFILL DEF

UnclassifiedEmissions

What This Code Means

DEF Indicator flashing; Alarm Lamp flashing; Alarm Lamp ON; Unit enters intermittent operation; Emergency shutdown activates; Engine Emission Indicator flashing; DEF Indicator Flashing; DEF Indicator ON; Engine Emission Indicator Check Engine Indicator Alarm Lamp Flashing; Engine Emission Indicator Check Engine Indicator Alarm Lamp ON

Possible Causes

  • •Low DEF level
  • •No supply of DEF
  • •DEF warnings are ignored
  • •Use of poor quality DEF
  • •Problems with DEF dosing
  • •Disconnection of sensors
  • •Ignored warning levels
  • •Tampering
  • •Repeat offense

Suggested Actions

  1. 1Replace the DEF filter (located in the urea SCR system supply module) every 1,000 hours of operation
  2. 2Refer to the Replacement of DEF Filter section in the Isuzu engine owner’s manual
  3. 3Refill DEF
  4. 4Refer to the Replacement of DEF Filter section in the Isuzu engine owner's manual

Related Multiquip Fault Codes

DEF QUALITY POORDEF SEVERE INDUCMTDEF PRESVR INDUCMT ADEF SEVERE INDUCMT ADEF PRESVR INDUCMTDEF SEVERE INDUCMT DEF LOW REFILL DEFDEF LOW REFILL DEFDEF SEVERE INDUCMT DEF LOW REFILL DEF ESCAPE MODEDEF LOW 15% WADEF SEVERE INDUCMT EXHAUST SYSTEM ERRDEF LOW 15%DEF SEVERE INDUCMT EXHAUST SYSTEM ERR ESCAPE MODE
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