Cummins Fault Codes

This is the complete list of Cummins fault codes. Covers Cummins ISB, Cummins ISC, Cummins ISL, Cummins ISM, Cummins ISX, and all other Cummins electronically controlled engines. If you are currently working on a Cummins engine and need more information check out our selection of factory printed Cummins manuals:

– Cummins Parts Manuals 
Cummins Service Manuals 
Cummins Electronic Diagnostics Manuals
Cummins Wire Diagrams
Cummins Insite Software

PID/SID

1
2
3
4
5
6
18
21
21
27
27
27
27
27
27
27
27
33
33
39
39
51
51
64
64
64
70
70
79
79
80
80
81
84
84
91
91
91
91
97
97
97
98
98
98
98
98
100
100
100
100
100
101
101
101
101
101
101
102
102
102
103
103
103
103
105
105
105
108
108
108
110
110
110
110
110
111
111
111
111
115
126
126
126
126
126
131
131
131
145
146
146
146
157
157
157
157
157
157
157
167
167
167
168
168
171
171
190
190
190
190
212
212
231
231
231
232
232
232
232
232
232
251
251
254
254
324
324
324
324
324
324
324
326
326
326
326
327
327
327
327
327
327
327
328
328
328
328
328
351
351
372
372
411
411
411
411
411
412
412
412

FMI

5
5
5
5
5
5
11
3
4
0
11
4
7
13
12
11
9
4
3
3
4
11
14
7
2
2
3
4
3
4
4
3
0
2
10
3
4
2
2
 
3
4
2
1
1
4
0
3
4
1
1
2
0
0
3
4
2
0
3
4
2
2
1
0
10
3
4
0
3
4
2
3
4
0
0
11
3
4
1
1
11
4
3
7
3
4
3
4
2
2
5
4
7
3
4
0
0
2
1
0
0
1
1
1
0
3
4
2
0
2
2
4
3
9
13
9
4
3
3
4
3
4
12
2
12
12
3
4
2
0
0
0
0
11
4
3
2
4
3
2
0
0
1
1
3
4
2
0
0
3
4
2
1
2
1
3
4
0
3
4
0

Fault

injector solenoid cyl#1
injector solenoid cyl#2
injector solenoid cyl#3
injector solenoid cyl#4
injector solenoid cyl#5
injector solenoid cyl#6
fuel injection control
ECM failure
ECM failure
VGT actuator
VGT actuator
EGR
VGT actuator
VGT actuator
VGT actuator
VGT actuator
VGT actuator
fan control circuit
fan control circuit
starter relay
starter relay
auxiliary sensor
auxiliary sensor
speed sensor
speed sensor
camshaft speed/position
intake heater
intake heater
engine brake
engine brake
engine brake
engine brake
particulate trap inlet
wheel speed sensor
wheel speed sensor
throttle position
throttle position
accelerator pedal
accelerator pedal
water in fuel
water in fuel
water in fuel
engine oil level
engine oil level
engine oil level
engine oil level
engine oil level
oil pressure sensor
oil pressure sensor
oil pressure sensor
oil pressure sensor
oil pressure sensor
crankcase pressure
crankcase pressure
crankcase pressure
crankcase pressure
crankcase pressure
crankcase pressure
intake mfld pres sensor
intake mfld pres sensor
intake mfld pres sensor
turbo speed
turbo speed
turbo 1
turbo 1
intake mfld tem sensor
intake mfld tem sensor
intake mfld tem sensor
barometric pres sensor
barometric pres sensor
barometric pres sensor
coolant temp sensor
coolant temp sensor
coolant temp sensor
coolant temp sensor
coolant temp sensor
coolant level sensor
coolant level sensor
coolant level sensor
coolant level sensor
oil change interval
fuel pump pressure
fuel pump pressure
fuel pump pressure
electric lift pump
electric lift pump
Exhaust Gas Pressure
Exhaust Gas Pressure
Exhaust Gas Pressure
cruise
EGR
EGR
EGR
injector rail pressure
injector rail pressure
injector rail pressure
injector rail pressure
injector rail pressure
injector rail pressure
injector rail pressure
charging voltage
charging voltage
charging voltage
ECM failure
ECM failure
ambient air tem sensor
ambient air tem sensor
position/speed signals
crankshaft speed
crankshaft speed/position
crankshaft speed
sensor supply
sensor supply
J1939 data
J1939 data
J1939 data
speed sensor
speed sensor
sensor supply
sensor supply
sensor supply
sensor supply
injector power supply
ECM failure
ECM failure
ECM failure
ATD
ATD
ATD
ATD
ATD
ATD
ATD
ATD
ATD
ATD
ATD
ATD
ATD
ATD
ATD
ATD
ATD
ATD
ATD
ATD
ATD
ATD
ATD
turbo inlet temp
turbo inlet temp
accelerator pedal
ambient air density
EGR
EGR
EGR
EGR
EGR
EGR
EGR
EGR

Description

current below normal or open
current below normal or open
current below normal or open
current below normal or open
current below normal or open
current below normal or open
error on fuel injection control valve
ecm internal temp above normal
ecm internal temp below normal
data above normal range
VGT not interpreting J1939 from ECM
EGR valve voltage below normal 
VGT unable to close
out of calibration 
internal VGT failure
mismatch between VGT and ECM calibration
J1939 failure between VGT and ECM
voltage below nornal or shorted low
voltage above normal or open circuit
voltage above normal or shorted high
voltage below normal or shorted low
input failure
engine protection sensor input 
misalignment between crank and cam speed
erratic/incorrect data signal from crank and cam
erratic data signal
voltage above normal or shorted high
voltage below normal or shorted low
voltage above normal or shorted high
voltage below normal or shorted low
voltage below normal or shorted low
voltage above normal or shorted high
excessive black smoke detected
erratic/incorrect data signal
abnornal rate of change
voltage above normal or shorted high
voltage below normal or open circuit
oem transmitted pedal fault
erratic data signal
data above normal range
voltage above normal or shorted high
voltage below normal or shorted low
erratic/incorrect data signal
level below normal range
level below normal range
voltage below normal or shorted low
level above normal range
voltage above normal or shorted high
voltage below normal or open circuit
pressure below normal range
oil pressure below protection limits
erratic/incorrect data signal
pressure above normal range
pressure above normal range
voltage above normal or shorted high
voltage below normal or shorted low
erratic data signal
change crankcase breather
voltage above normal or shorted high
voltage below normal or open circuit
data does not match current conditions
erratic/incorrect data signal
speed below normal range
turbo1 speed above normal range
turbo 1 speed abnormal rate of change
voltage above normal or shorted high
voltage below normal or open circuit
temperature above protection limit
voltage above normal or shorted high
voltage below normal or shorted low
erratic/incorrect data signal
voltage above normal or shorted high
voltage below normal or open circuit
temperature above normal range
temperature above protection limit
EGR closed to reduce coolant temperature
voltage above normal or shorted high
voltage below normal or open circuit
level below normal range
level below normal range
change interval condition
voltage below normal or shorted low
voltage above normal or shorted high
pumping imbalance or out of adjustment
supply voltage high
supply voltage low
voltage above normal or shorted high
voltage belwo normal or shorted low
erratic data signal
erratic data signal
EGR control current below normal
EGR control current below normal
EGR control not responding,valve stuck
voltage above normal or shorted high
voltage beloe normal or shorted low
pressure above normal range
pressure above normal range
erratic/incorrect data signal
pressure below normal range
pressure above normal range
voltage above normal 
voltage below normal
voltage below normal
supply voltage low
suply voltage high
voltage below normal or shorted low
voltage below normal or shorted low
position/speed signals are incorrect/intermittent
engine speed above protection limits
loss of data signal
erratic data signal
voltage below normal or shorted low
voltage above normal or shorted high
not receiving J1939 data
J1939 configuration
loss of data signal
voltage below normal or shorted low
voltage above normal or shorted high
voltage above normal or shorted high
voltage below normal or shorted low
voltage above normal or shorted high
voltage below normal or shorted low
low voltage for injector power supply
igniton power lost to ecm
check ECM supply voltage; replace ECM
check ECM supply voltage; replace ECM
ATD differential pressure voltage above normal
ATD differential pressure voltage below normal
ATD differential pressure signal erratic 
ATD differential pressure above limits
ATD differential pressure above limits, derate
ATD differential pressure above normal range
ATD soot load above limits
ATD temp and pressure sensors reversed
ATD temp voltage below normal or shorted low
ATD temp voltage above normal or shorted high
ATD temp erratic data
ATD temp voltage below normal or shorted low
ATD temp voltage above normal or shorted high
ATD temp erratic data
ATD temp data above normal range
ATD temp data above normal range
ATD temp does not reach limit for parked regen
ATD temp does not reach limit for parked regen
ATD temp voltage above normal or shorted high
ATD temp voltage below normal or shorted low
ATD temp data erratic
ATD temp data above normal range
ATD temp data above normal range
voltage above normal or shorted high
volltage below normal or shorted low
oem transmitted pedal fault
data below normal range
EGR delta pressure data erratic
EGR delta pressure below normal range
EGR delta pressure sensor voltage above normal
EGR delta pressure sensor voltage below normal
EGR delta pressure above normal
EGR temp sensor voltage above normal
EGR temp sensor voltage below normal
EGR temp above normal range
15injector solenoid cyl#1current below normal or open
25injector solenoid cyl#2current below normal or open
35injector solenoid cyl#3current below normal or open
45injector solenoid cyl#4current below normal or open
55injector solenoid cyl#5current below normal or open
65injector solenoid cyl#6current below normal or open
1811fuel injection controlerror on fuel injection control valve
213ECM failureecm internal temp above normal
214ECM failureecm internal temp below normal
270VGT actuatordata above normal range
2711VGT actuatorVGT not interpreting J1939 from ECM
274EGREGR valve voltage below normal 
277VGT actuatorVGT unable to close
2713VGT actuatorout of calibration 
2712VGT actuatorinternal VGT failure
2711VGT actuatormismatch between VGT and ECM calibration
279VGT actuatorJ1939 failure between VGT and ECM
334fan control circuitvoltage below nornal or shorted low
333fan control circuitvoltage above normal or open circuit
393starter relayvoltage above normal or shorted high
394starter relayvoltage below normal or shorted low
5111auxiliary sensorinput failure
5114auxiliary sensorengine protection sensor input 
647speed sensormisalignment between crank and cam speed
642speed sensorerratic/incorrect data signal from crank and cam
642camshaft speed/positionerratic data signal
703intake heatervoltage above normal or shorted high
704intake heatervoltage below normal or shorted low
793engine brakevoltage above normal or shorted high
794engine brakevoltage below normal or shorted low
804engine brakevoltage below normal or shorted low
803engine brakevoltage above normal or shorted high
810particulate trap inletexcessive black smoke detected
842wheel speed sensorerratic/incorrect data signal
8410wheel speed sensorabnornal rate of change
913throttle positionvoltage above normal or shorted high
914throttle positionvoltage below normal or open circuit
912accelerator pedaloem transmitted pedal fault
912accelerator pedalerratic data signal
97 water in fueldata above normal range
973water in fuelvoltage above normal or shorted high
974water in fuelvoltage below normal or shorted low
982engine oil levelerratic/incorrect data signal
981engine oil levellevel below normal range
981engine oil levellevel below normal range
984engine oil levelvoltage below normal or shorted low
980engine oil levellevel above normal range
1003oil pressure sensorvoltage above normal or shorted high
1004oil pressure sensorvoltage below normal or open circuit
1001oil pressure sensorpressure below normal range
1001oil pressure sensoroil pressure below protection limits
1002oil pressure sensorerratic/incorrect data signal
1010crankcase pressurepressure above normal range
1010crankcase pressurepressure above normal range
1013crankcase pressurevoltage above normal or shorted high
1014crankcase pressurevoltage below normal or shorted low
1012crankcase pressureerratic data signal
1010crankcase pressurechange crankcase breather
1023intake mfld pres sensorvoltage above normal or shorted high
1024intake mfld pres sensorvoltage below normal or open circuit
1022intake mfld pres sensordata does not match current conditions
1032turbo speederratic/incorrect data signal
1031turbo speedspeed below normal range
1030turbo 1turbo1 speed above normal range
10310turbo 1turbo 1 speed abnormal rate of change
1053intake mfld tem sensorvoltage above normal or shorted high
1054intake mfld tem sensorvoltage below normal or open circuit
1050intake mfld tem sensortemperature above protection limit
1083barometric pres sensorvoltage above normal or shorted high
1084barometric pres sensorvoltage below normal or shorted low
1082barometric pres sensorerratic/incorrect data signal
1103coolant temp sensorvoltage above normal or shorted high
1104coolant temp sensorvoltage below normal or open circuit
1100coolant temp sensortemperature above normal range
1100coolant temp sensortemperature above protection limit
11011coolant temp sensorEGR closed to reduce coolant temperature
1113coolant level sensorvoltage above normal or shorted high
1114coolant level sensorvoltage below normal or open circuit
1111coolant level sensorlevel below normal range
1111coolant level sensorlevel below normal range
11511oil change intervalchange interval condition
1264fuel pump pressurevoltage below normal or shorted low
1263fuel pump pressurevoltage above normal or shorted high
1267fuel pump pressurepumping imbalance or out of adjustment
1263electric lift pumpsupply voltage high
1264electric lift pumpsupply voltage low
1313Exhaust Gas Pressurevoltage above normal or shorted high
1314Exhaust Gas Pressurevoltage belwo normal or shorted low
1312Exhaust Gas Pressureerratic data signal
1452cruiseerratic data signal
1465EGREGR control current below normal
1464EGREGR control current below normal
1467EGREGR control not responding,valve stuck
1573injector rail pressurevoltage above normal or shorted high
1574injector rail pressurevoltage beloe normal or shorted low
1570injector rail pressurepressure above normal range
1570injector rail pressurepressure above normal range
1572injector rail pressureerratic/incorrect data signal
1571injector rail pressurepressure below normal range
1570injector rail pressurepressure above normal range
1670charging voltagevoltage above normal 
1671charging voltagevoltage below normal
1671charging voltagevoltage below normal
1681ECM failuresupply voltage low
1680ECM failuresuply voltage high
1713ambient air tem sensorvoltage below normal or shorted low
1714ambient air tem sensorvoltage below normal or shorted low
1902position/speed signalsposition/speed signals are incorrect/intermittent
1900crankshaft speedengine speed above protection limits
1902crankshaft speed/positionloss of data signal
1902crankshaft speederratic data signal
2124sensor supplyvoltage below normal or shorted low
2123sensor supplyvoltage above normal or shorted high
2319J1939 datanot receiving J1939 data
23113J1939 dataJ1939 configuration
2319J1939 dataloss of data signal
2324speed sensorvoltage below normal or shorted low
2323speed sensorvoltage above normal or shorted high
2323sensor supplyvoltage above normal or shorted high
2324sensor supplyvoltage below normal or shorted low
2323sensor supplyvoltage above normal or shorted high
2324sensor supplyvoltage below normal or shorted low
25112injector power supplylow voltage for injector power supply
2512ECM failureigniton power lost to ecm
25412ECM failurecheck ECM supply voltage; replace ECM
25412ECM failurecheck ECM supply voltage; replace ECM
3243ATDATD differential pressure voltage above normal
3244ATDATD differential pressure voltage below normal
3242ATDATD differential pressure signal erratic 
3240ATDATD differential pressure above limits
3240ATDATD differential pressure above limits, derate
3240ATDATD differential pressure above normal range
3240ATDATD soot load above limits
32611ATDATD temp and pressure sensors reversed
3264ATDATD temp voltage below normal or shorted low
3263ATDATD temp voltage above normal or shorted high
3262ATDATD temp erratic data
3274ATDATD temp voltage below normal or shorted low
3273ATDATD temp voltage above normal or shorted high
3272ATDATD temp erratic data
3270ATDATD temp data above normal range
3270ATDATD temp data above normal range
3271ATDATD temp does not reach limit for parked regen
3271ATDATD temp does not reach limit for parked regen
3283ATDATD temp voltage above normal or shorted high
3284ATDATD temp voltage below normal or shorted low
3282ATDATD temp data erratic
3280ATDATD temp data above normal range
3280ATDATD temp data above normal range
3513turbo inlet tempvoltage above normal or shorted high
3514turbo inlet tempvolltage below normal or shorted low
3722accelerator pedaloem transmitted pedal fault
3721ambient air densitydata below normal range
4112EGREGR delta pressure data erratic
4111EGREGR delta pressure below normal range
4113EGREGR delta pressure sensor voltage above normal
4114EGREGR delta pressure sensor voltage below normal
4110EGREGR delta pressure above normal
4123EGREGR temp sensor voltage above normal
4124EGREGR temp sensor voltage below normal
4120EGREGR temp above normal range