Multiquip

SCR SYS ERR

UnclassifiedEmissions

What This Code Means

Pre-Alarm Lamp ON; Shutdown Lamp ON; SCR SYS ERR pop-up display; DEF Symbol ON; DEF Symbol slow blinking; DEF Symbol fast blinking; Emergency shutdown; Unit enters intermittent operation; Unit enters ESCAPE MODE; Unit requires up to 30 minutes to restart; Engine will stop; Escape Mode timer reaches zero minutes; SCR System Error; Purge Prohibited; Imminent shutdown (SD IN 18 MIN); DEF Symbol is ON; DEF Symbol is Slow Blinking; Pre-Alarm Lamp is ON; Warning issued before situation becomes critical; DEF Symbol is Fast Blinking; Shutdown Lamp is ON; Intermittent operation; SCR system error; Imminent engine shutdown (SD IN 18 MIN); Engine stops; DEF Symbol Slow Blinking; DEF Symbol Fast Blinking; Escape Mode timer reaches zero; SCR System Malfunction controller message; DEF Symbol lit (ON); Pre-Alarm Lamp lit (ON); Shutdown Lamp lit (ON); SCR SYS ERR pop-up displayed; Stage 1 Warning Level 1: DEF Symbol ON, Pre-Alarm Lamp ON; Stage 2 Warning Level 2: DEF Symbol Slow Blinking, Pre-Alarm Lam

Possible Causes

  • •No supply of DEF
  • •Use of poor quality DEF
  • •Problems with DEF dosing
  • •Disconnection of sensors
  • •Ignoring active warning levels
  • •Escape Mode time has expired
  • •SCR system malfunction or trouble requiring emergency reserve engine run
  • •Warnings ignored
  • •SCR system trouble
  • •Escape Mode timer reaches zero minutes (Escape Mode time expired)
  • •Poor quality DEF
  • •Improper usage of SCR system
  • •Warnings are ignored
  • •ESCAPE MODE timer reaches zero minutes
  • •ESCAPE MODE time has expired
  • •Unit is operating outside of Warning Level 1
  • •Improper usage
  • •Stage 1 warnings ignored
  • •Stage 1 and Stage 2 warnings ignored
  • •System warnings are ignored

Suggested Actions

  1. 1Perform prompt inspection and repair
  2. 2Enter ESCAPE MODE if emergency protective measures are necessary
  3. 3Perform maintenance to return the unit to proper operating condition
  4. 4Press the [ SELECT ] button to enter the 'Escape Mode' menu
  5. 5Press the [ REQUEST ] button to send the 'Escape Mode Request' signal to the ECM
  6. 6Place the Auto Start/Stop switch in the 'Off/Reset' position
  7. 7Place the Auto Start/Stop Switch in the 'Manual' position to start the engine
  8. 8Supply proper quality DEF
  9. 9Resolve DEF dosing problems
  10. 10Reconnect disconnected sensors
  11. 11Replace the DEF filter (located in the urea SCR system supply module) every 3,000 hours of operation
  12. 12Perform inspection and repair promptly
  13. 13Enter ESCAPE MODE to restart the unit (may require as much as 30 minutes to restart) if emergency protective measures are necessary
  14. 14Press the [ REQUEST ] button to send 'Escape Mode Request' signal to ECM to attempt emergency reserve engine run
  15. 15Place the Auto Start/Stop switch in the 'Manual' position to start the engine
  16. 16Perform inspection and repair
  17. 17Replace the DEF filter every 3,000 hours of operation
  18. 18Enter ESCAPE MODE if emergency protective measures are necessary (unit may require up to 30 minutes to restart)
  19. 19Utilize Escape mode operation (available for approximately 30 minutes after operation has ended)
  20. 20Enter ESCAPE MODE (if emergency protective measures are necessary; may require up to 30 minutes to restart)

Related Multiquip Fault Codes

SCR SYSTEM MALFUNCTIONSCR SYSTEM MALFUNCTION SDSCR FORCED PURGE REQSCR TROUBLE-PURGE PROHIBITEDP2211SERVICE DPF (SOOT ONLY)P2207SOOT LEVEL HIGH!NEED MAN REGENSOOT LEVEL VERY HIGH!MAINTENANCE INTERVAL PRE-ALARMSPN 10504 FMI 12
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