Detroit DD15 GHG14 (2014-16) Fault Code: SPN 84 FMI 3 (MCM) Vehicle Speed Sensor Open Circuit
DESCRIPTION:
Vehicle speed sensor circuit failed high.
MONITORED PARAMETER:
Vehicle speed sensor (VSS).
TYPICAL ENABLING CONDITIONS:
Always Enabled
MONITOR SEQUENCE:
None
EXECUTION FREQUENCY:
Always Enabled
TYPICAL DURATION:
2 seconds
DASH LAMPS:
MIL
ENGINE REACTION:
None
VERIFICATION:
Engine Idle (1 minute).
PROBABLE CAUSES:
1. Vehicle speed sensor.
2. Wiring between vehicle speed sensor and ECM.
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