DEF PRESVR INDUCMT

UnclassifiedEmissions

What This Code Means

Stage 1 Warning Level 1 alarm screen message active; Stage 2 Warning Level 2 alarm screen message active; Stage 3 Shutdown alarm screen message active; EXHAUST System Err message flashing; DEF Presvr Inducmt pre-alarm message active; DEF Severe Inducmt pre-alarm message active; Engine Emission Indicator flashing; Check Engine Indicator ON; Unit enters intermittent operation; Emergency shutdown activates

Possible Causes

  • DEF tank level is below 5%
  • Disconnection of sensors
  • No supply of DEF
  • Problems with DEF dosing
  • Use of poor quality DEF
  • Warnings ignored

Suggested Actions

  1. 1Ensure use of proper quality DEF
  2. 2Reconnect disconnected sensors
  3. 3Refer to the Replacement of DEF Filter section in the Isuzu engine owner’s manual
  4. 4Replace the DEF filter (located in the urea SCR system supply module) every 1,000 hours of operation
  5. 5Resolve problems with DEF dosing
  6. 6Supply DEF

ASK RUDY ABOUT THIS FAULT

Get a diagnosis walkthrough for DEF PRESVR INDUCMT on your specific Multiquip Inc. unit — cited to the OEM manual, not a forum guess.

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