215676
484
Revision A
Cummins
Fault Code
J1939
SPN
J1939
FMI
Lamp
J1939 SPN Description
Cummins Description
68
553
157
16
Amber
Injector metering rail 1
pressure
Injector metering rail #1 pressure high
—
data
valid but above normal operational range
—
moderately severe level
559
157
18
Amber
Injector metering rail 1
pressure
Injector metering rail #1 pressure low
—
data
valid but below normal operational range
—
moderately severe level
951
166
2
None
Cylinder power
Cylinder power imbalance between cylinders
—
data erratic, intermittent, or incorrect
598
167
1
Red
Alternate potential
(voltage)
Electrical charging system voltage low
—
data
valid but below normal operational range
—
most severe level
596
167
16
Amber
Alternate potential
(voltage)
Electrical charging system voltage high
—
data
valid but above normal operational range
—
moderately severe level
597
167
18
Amber
Alternate potential
(voltage)
Electrical charging system voltage low
—
data
valid but below normal operational range
—
moderately severe level
442
168
16
Amber
Electrical potential
(voltage)
Battery #1 voltage high
—
data valid but above
normal operational range
—
moderately
severe level
441
168
18
Amber
Electrical potential
(voltage)
Battery #1 voltage low
—
data valid but below
normal operational range
—
moderately
severe level
249
171
3
Amber
Ambient air
temperature
Ambient air temperature sensor circuit
—
voltage above normal, or shorted to
high source
256
171
4
Amber
Ambient air
temperature
Ambient air temperature sensor circuit
—
voltage below normal, or shorted to
low source
263
174
3
Amber
Fuel temperature
Engine fuel temperature sensor 1 circuit
—
voltage above normal, or shorted to
high source
265
174
4
Amber
Fuel temperature
Engine fuel temperature sensor 1 circuit
—
voltage below normal, or shorted to
low source
261
174
16
Amber
Fuel temperature
Engine fuel temperature
—
data valid but
above normal operational range
—
moderately
severe level
214
175
0
Red
Oil temperature
Engine oil temperature
—
data valid but above
normal operational range
—
most severe level
425
175
2
Amber
Oil temperature
Engine oil temperature
—
data erratic,
intermittent, or incorrect
212
175
3
Amber
Oil temperature
Engine oil temperature sensor 1 circuit
—
voltage above normal, or shorted to
high source
68. The descriptions of Cummins J1939 SPN codes are subject to change at their discretion.