REFERENCE
Fault
Code
J1939
SPN
J1939
FMI
Lamp
Color
J1939 SPN
Description Cummins Description
45
221 108 3 Amber Barometric
Pressure
Barometric Pr
essure Se nsor Circuit – Voltage
Above Normal,
or Shorted to Hig h Source
222 108 4 Amber Barometric
Pressure
Barometric Pres su re Sensor Circuit – Volta ge
Below Normal, or Shorted to Low Source
227 3510 3 Amber
5 Volts DC Supply Sensor Supply Voltage #2 Circuit – Voltage Above
Normal, or Shorted to High Source
231 109 3 Amber
Coolant Pr
essure
Coolant Pr
essure Sensor Circuit - Voltage Above
Normal, or
ShortedtoHighSource
232 109 4 Amber
Coolant Pressu re Coolant Pressu re Sensor Circuit - Volta ge Below
Normal, or Shorted to Low Source
233 109 18 Amber
Coolant Pressure Coolant Pressure - Data Valid but Below Normal
Operational Range - Moderately Severe Level
234 190 0 Red
Engine S
peed
Engine S
peed High - Data Valid but Above Normal
Operat
ional Range - Most Severe Level
235 111 1 Red
Coolant Level Coolant Level Low - Data Valid but Below Normal
Operational Range - Most Severe Level
237 644 2 Amber
External Speed
Input
External Speed Input (Multiple Unit
Synchronization) - Data Erratic, Intermittent, or
Incorrect
238 3511 4 Amber
Syst
em Diagnostic
code
#1
Sens
or Supply Voltage #3 Circuit – Voltage Below
Norm
al, or Shorted to Low Source
239 3511 3 Amber
System Diagnostic
code #2
Sensor Supply Voltage #3 Circuit - Voltage Above
Normal, or Shorted to High Source
241 84 2 Amb
er
Whe
el-based
Ve
hicle Speed
Vehicle Speed Sensor Circuit - Data Erratic,
Intermittent, or Incorrect
242 84 10 Amber
Whee l-based
Vehicle Speed
Ve
hicle Speed Sensor Circuit tampering has been
d
etected – Abnormal Rate of Change
244 623 4 Amber
Red Stop Lamp Red Stop Lamp Driver Circuit - Voltage Below
Normal, or Shorted to Low Source
245 647 4 Amber
FanClutchOutput
Device Driver
Fan Control Circuit - Voltage Below N ormal, or
Shorted to Low Source
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
261 174 16 Amber Fuel Temperature
Engine Fuel Temperature - Data Valid but Above
Normal Operational Range - Moderately Severe
Level
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
147649
4
71
Revision A
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