Global SCR Fault Code
Free · no signupSPN 5246 FMI 15
Dash says "Derate in 30 Minutes"; Alarm beeping; Yellow/Amber warnings.
System
Not specified
Symptom
Dash says "Derate in 30 Minutes"; Alarm beeping; Yellow/Amber warnings.
Diagnosis & fix steps
SCR Operator Inducement - Low Severity.
LOGIC: The "Timer" has started. The machine is giving the operator a final warning to refill DEF or fix an emissions fault.
ACTION: 1. Refill DEF immediately.
2. Check for active NOx sensor codes.
3. Look for "Service" messages on the MMI display.
FIX: Resolve the active emissions fault and restart the engine.
Red Seal field insights
This is the "Grace Period." If you fix the problem while FMI 15 is active, you avoid the 5 MPH "Final Inducement" (FMI 0) which often requires a technician to reset.
Same code keeps coming back?
That's a program problem, not a part problem. Book a 30-minute uptime review with Grant, a Red Seal Heavy Duty Technician.
Read before you touch anything
- This is general reference information, not a repair manual. It is for trained, qualified technicians.
- Fault codes, meanings and procedures vary by model, serial number and software version. Confirm the code and the procedure against the manufacturer's service manual before acting.
- Follow the OEM service manual, torque specs and your site's safety procedures: lockout/tagout, block raised equipment, relieve hydraulic, fuel and air pressure, and let hot systems cool.
- You use this information at your own risk. Adventure Mechanical and AM Fleet Integrity accept no liability for damage, injury, downtime or loss arising from its use.
- Not affiliated with or endorsed by any manufacturer. Brand names are used only to identify the equipment a code applies to.
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Start your free trialRelated Global SCR fault codes
- SPN 5394 FMI 5"DEF System Error"; No dosing heard; DEF level stays static for days.
- SPN 4364 FMI 18Progressive power loss; "Emissions Failure" warning; Excessive DEF consumption.
- SPN 4363 FMI 0 / 16Black smoke; Poor engine performance; High exhaust backpressure.
- SPN 4334 FMI 3 / 4Engine derate; DEF system failure; Possible white smoke from exhaust.
- SPN 3364 FMI 2 / 17Engine derate; "DEF Symbol" flashing; Machine may eventually lock into 5 MPH or Idle-only.
- SPN 3361 FMI 31Sudden shutdown or 5 MPH limit; No other active codes; Very difficult to clear.
- SPN 3216 FMI 13 / 20Intermittent Check Engine Light; Sudden derate; Inconsistent emissions data.
- SPN 3031 FMI 2 / 9DEF pump won't engage; Code appears during cold weather; High fuel use.
- SPN 1761 FMI 1 / 18Empty tank warning when full; Machine shutdown; Alarm buzzer.