214733 478 Revision A
J1939
SPN
J1939
FMI
Telltale
Lamp
Cummins
Fault Code
J1939_SPN Description
Detail
612 2
Stop
Engine
Red
115
System Diagnostic Code #2
Engine Magnetic Speed/Position
Lost Both of Two Signals - Data is
erratic, intermittent, or incorrect
625 9
Stop
Engine
Red
291
Proprietary Datalink
Proprietary Datalink Error (OEM/
Vehicle Datalink) - Abnormal
update rate
629 12
Check
Engine
Amber
343
Controller #1
Engine Control Module Warning
Internal Hardware Failure - Bad
intelligent device or component
630 12
Stop
Engine
Red
3697
Engine Control Module
Calibration Memory
Engine Control Module
Calibration Memory - Bad
intelligent device or component
633 31
Check
Engine
Amber
2311
Engine Fuel Actuator 1
Control Command
Electronic Fuel Injection Control
Valve Circuit - Condition exists
639 9
Check
Engine
Amber
285
J1939 Network #1, Primary
Vehicle Network
(previously SAE J1939
Data Link)
SAE J1939 Multiplexing PGN
Timeout Error - Abnormal
update rate
639 13
Check
Engine
Amber
286
J1939 Network #1, Primary
Vehicle Network
(previously SAE J1939
Data Link)
SAE J1939 Multiplexing
Configuration Error - Out of
Calibration
641 7
Check
Engine
Amber
2387
Engine Variable Geometry
Turbocharger Actuator #1
VGT Actuator Driver Circuit
(Motor) - Mechanical system not
responding or out of adjustment
641 9
Check
Engine
Amber
1894
Engine Variable Geometry
Turbocharger Actuator #1
VGT Actuator Driver Circuit -
Abnormal update rate
641
11
Check
Engine
Amber
2198
Engine Variable Geometry
Turbocharger Actuator #1
VGT Actuator Driver Circuit - Root
cause not known
641 12
Stop
Engine
Red
2634
Engine Variable Geometry
Turbocharger Actuator #1
VGT Actuator Controller - Bad
intelligent device or component
641 13
Stop
Engine
Red
2449
Engine Variable Geometry
Turbocharger Actuator #1
VGT Actuator Controller - Out of
Calibration
641 15
Check
Engine
None
1976
Engine Variable Geometry
Turbocharger Actuator #1
VGT Actuator Driver Over
Temperature (Calculated) - Data
valid but above normal operating
range - Least Severe Level
641 31
Stop
Engine
Red
2635
Engine Variable Geometry
Turbocharger Actuator #1
VGT Actuator Driver Circuit -
Condition exists
644 2
Check
Engine
Amber
237
Engine External Speed
Command Input
External Speed Command Input
(Multiple Unit Synchronization) -
Data is erratic, intermittent, or
incorrect
647 3
Check
Engine
None
6263
Engine Fan Clutch 1 Output
Device Driver
Fan Control Circuit - Voltage
above normal, or shorted to
high source
REFERENCE