SCR SYS ERR
UnclassifiedGeneral
What This Code Means
Stage 1 Warning (DEF Indicator ON); Stage 2 Warning (DEF Indicator Slow Blinking, Pre-Alarm Lamp ON); Stage 3 Shutdown (DEF Indicator Fast Blinking, Pre-Alarm Lamp ON, Shutdown Lamp ON); Emergency shutdown; Intermittent operation; Unit requires up to 30 minutes to restart
Possible Causes
- •Disconnection of sensors
- •Escape Mode timer expires (30-minute limit)
- •Improper usage
- •No supply of DEF
- •Problems with DEF dosing
- •SCR system fault requiring maintenance
- •Use of poor quality DEF
- •Warnings are ignored
- •Warnings ignored
Suggested Actions
- 1Enter ESCAPE MODE if emergency protective measures are necessary (allows restart, may require up to 30 minutes)
- 2Enter ESCAPE MODE if emergency protective measures are necessary (note: unit may require up to 30 minutes to restart)
- 3Perform inspection and repair promptly
- 4Perform maintenance to return the unit to proper operating condition
- 5Replace the DEF filter (located in the urea SCR system supply module) every 1,000 hours of operation
- 6To temporarily bypass the shutdown and run in emergency reserve, request Escape Mode: Press [SELECT] to enter the 'Escape Mode' menu, press [REQUEST] to send the request to the ECM, place the Auto Start/Stop switch in the OFF/RESET position, and then place it in the MANUAL position to restart the engine.
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