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Detroit DD13 EPA10 (2010-13) Fault Code: SPN 84 FMI 4 (MCM) Vehicle Speed Sensor Circuit Failed Low

DESCRIPTION:Vehicle speed sensor circuit failed low.

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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