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P1791 - Vehicle Speed Sensor Range/Performance Problem

Possible causes
- Faulty Vehicle Speed Sensor
- Vehicle Speed Sensor harness is open or shorted
- Vehicle Speed Sensor circuit poor electrical connection
What does this mean? What does this mean?
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1791 Description

The Vehicle Speed Sensor (VSS) is driven by the differential. It generates a pulsed signal from an input 5 volts. The number of pulses per minute increases/decreases with the speed of the vehicle.

P1791 Information for specific makes
P1791 ACURA Vehicle Speed Sensor Range/Performance Problem
P1791 BUICK Transmission Control Module Loop
P1791 CADILLAC Transmission Control Module Loop
P1791 CHEVROLET Transmission Control Module Loop
P1791 GMC Transmission Control Module Loop
P1791 HONDA Vehicle Speed Sensor Range/Performance Problem
P1791 HYUNDAI TPS Input Circuit Malfunction
P1791 ISUZU Vehicle Speed Sensor Range/Performance Problem
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