Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 91
FMI: 31

Description: 2-Channel Accelerator Pedal Learned Range to Large
Troubleshooting:
DESCRIPTION:
Pedal sensor signal outside of learned range.
MONITORED PARAMETER:
Pedal position
TYPICAL ENABLING CONDITIONS:
Always on.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
CEL
ENGINE REACTION:
None
VERIFICATION:
Key Cycle – ignition ON.
POSSIBLE CAUSES:
1. CPC needs reprogramming.
2. Faulty accelerator pedal.
3. Faulty wiring.
4. Faulty Common Powertrain Controller (CPC).
5. Damaged pins.
6. Bent pins.
7. Spread pins.
8. Unseated pins.
9. Connector damage.

Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 94
FMI: 1

Description: Vehicle Speed Outside the Allowable Range
Troubleshooting:
DESCRIPTION:
This fault code sets when the vehicle speed sensor reads the maximum value 255kph (185
mph).
MONITORED PARAMETER:
Vehicle Speed Sensor (VSS).
TYPICAL ENABLING CONDITIONS:
rpm greater than 1500, torque demand on.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
10 seconds
DASH LAMPS:
MIL
ENGINE REACTION:
None
VERIFICATION:
rpm greater than 1500, torque demand on.
NOTE: OEM VSS connectors may vary.
POSSIBLE CAUSES:
1. Common Powertrain Controller (CPC) needs reprogramming.
2. Bent pins.
3. Spread pins.
4. Corroded pins
5. Connector damage.
6. Faulty wiring.

Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 94
FMI: 2

Description: Low Side Fuel Pressure Not Plausible
Troubleshooting:
DESCRIPTION:
Low side fuel pressure out of range.
MONITORED PARAMETER:
Low side fuel pressure sensor circuit.
TYPICAL ENABLING CONDITIONS:
Always enabled.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled.
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
None
VERIFICATION:
Engine Idle (one minute).
POSSIBLE CAUSES:
1. Aerated fuel
2. Faulty wiring.
3. Faulty LPPO fuel pressure sensor.

Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 94
FMI: 3

Description: Fuel Compensation Pressure Sensor Circuit Failed High
Troubleshooting:
DESCRIPTION:
Low side fuel pressure circuit short to voltage.
MONITORED PARAMETER:
Low side fuel pressure sensor circuit.
TYPICAL ENABLING CONDITIONS:
Always enabled.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled.
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
None
VERIFICATION:
Engine Idle (one minute).
POSSIBLE CAUSES:
Faulty wiring.

Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 94
FMI: 4

Description: Low Side Fuel Pressure Sensor Circuit Failed Low
Troubleshooting:
DESCRIPTION:
Low side fuel pressure circuit short to ground.
MONITORED PARAMETER:
Low side fuel pressure sensor circuit.
TYPICAL ENABLING CONDITIONS:
Always enabled.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Always enabled.
TYPCIAL DURATION:
Two seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
None
VERIFICATION:
Engine Idle (one minute).
POSSIBLE CAUSES:
1. Damaged pins.
2. Bent pins.
3. Spread pins.
4. Unseated pins.
5. Connector damage.
6. Faulty wiring.
7. Faulty MCM.