REFERENCE
8.4 Engine Error C odes
Example: cab display module (CDM) displays the Error Code 629S 16F 28C
1. 629S - S represents the J1939 SPN column. Locate code 629 in that column.
2. 12F - F represents the FMI column. Locate code 12 in that column.
3. 28C - C is occurrences, 28 is the quantity.
4. J1939 SPN description - Controller #1. The Cummins description of this is engine control module critical internal
failure - Ba d in telligent device or component.
5. The Cummins Dealer will request the fault code that corresponds with the number that you have located in the
J1939 SPN column.
Fault
Code
J1939
SPN
J1939
FMI
Lamp
Color
J1939 SPN
Description Cummins Description
45
111 629 12 Red
Controller #1 Engine Control Module Critical internal failure -
Bad intelligent Device or Comp o nen t
115 612 2 Red
System Di
agnostic
Code # 2
Engine Sp
eed/Position Sensor Circuit lost both
of two si
gnals from the magnetic pickup sensor -
Data Err
atic, Intermittent, or incorrect
122 102 3 Amber Boost Pressure
Intake Manifold Pressure Sensor Circuit – Voltage
Above Normal, or Shorted to High Source
123 102 4 Amber Boost Pressure
Intake Manifold Pressure Sensor Circuit – Voltage
Below Normal, or Shorted to Low Source
124 102 16 Amber Boost Pressure
Intak
e Manifold 1 P ressure - Data Valid but Above
Norma
l Operational Range - Moderately Severe
Level
131 91 3 Red
Accelerator Pedal
Position
Accelerator P ed a l o r Lever Position Sensor Circu it
- Voltage Above Normal, or Shorted to H igh
Source
132 91 4 Red
Accelerator Pedal
Position
Accelerator P ed a l o r Lever Position Sensor Circu it
- Voltage Below Normal, or Shorted to Low Source
133 974 3 Red
Remote
Accelerator
Remote Accelerator Pedal or Lever Position
Sensor Circuit – Voltage Above Normal, or
Shorted to High Source
13
4
97
4
4Re
d
Re
mote
Ac
celerator
Re
mote Accelerator Pedal or Lever Position
Se
nsor Circuit – Voltage Below Normal, or Shorted
t
o Low Source
135 100 3 Amber
Engine Oil Pressure O il Pressure Sensor Circuit - Voltage Above
Normal, or Shorted to High Source
141 100 4 Amber
Engine Oil Pressure Oil Pressure Sensor Circuit - Voltage Below
Normal, or Shorted to Low Source
143 100 18 Amber
Engine Oil Pressure Oil Pressure Low – Data Valid but Below No rmal
Operational Range - Moderately Severe Level
45. These are Cummins descriptions of the J1939 SPN and are subject to change at their discretion.
147649 469 Revision A
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