Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 84
FMI: 3
Description: Vehicle Speed Sensor Open Circuit
Troubleshooting:
DESCRIPTION:
Vehicle speed sensor circuit short to voltage.
MONITORED PARAMETER:
Vehicle speed sensor.
TYPICAL ENABLING CONDITIONS:
Key ON and engine ON.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
Three seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
None
VERIFICATION:
RPM greater than 600.
POSSIBLE CAUSES:
1. Faulty wiring
2. Faulty VSS
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 84
FMI: 4
Description: Vehicle Speed Sensor Circuit Failed Low
Troubleshooting:
DESCRIPTION:
Vehicle speed sensor circuit short to ground.
MONITORED PARAMETER:
Vehicle speed sensor.
TYPICAL ENABLING CONDITIONS:
Key ON and engine ON.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
Three seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
None
VERIFICATION:
RPM greater than 600.
POSSIBLE CAUSES:
1. Faulty wiring
2. Faulty VSS
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 84
FMI: 5
Description: Vehicle Speed Sensor Open Circuit
Troubleshooting:
DESCRIPTION:
Vehicle speed sensor circuit open.
MONITORED PARAMETER:
Vehicle speed sensor.
TYPICAL ENABLING CONDITIONS:
Key ON and engine ON.
MONITOR SEQUENCE:
None
EXECUTION FREQUENCEY:
Continuous when enabling conditions met.
TYPCIAL DURATION:
Three seconds
DASH LAMPS:
1. MIL
2. CEL
ENGINE REACTION:
None
VERIFICATION:
RPM greater than 600.
NOTE: This SPN is broadcast to the Motor Control Module (MCM) via the Common Powertrain
Controller (CPC).
POSSIBLE CAUSES:
1. Faulty wiring
2. Faulty VSS
Make: Detroit
Engine: DD15 GHG17 (2017 & Newer)
PID: N/A
SPN: 84
FMI: 6
Description: VSS Anti-Tamper Detection via ABS Vehicle Speed Comparison
Troubleshooting:
NOTE: This fault only occurs on vehicles equipped with a manual transmission. It indicates the
Vehicle Speed Sensor (VSS) speed is different than Antilock Brake (ABS) wheel speed.
POSSIBLE CAUSES:
Faulty ABS system