Keep your speedometer, cruise control, and transmission shift timing reading accurately with the Standard Ignition Vehicle Speed Sensor SC686. It drops in as a direct-fit replacement for the 2005-2010 Subaru Forester, 2005-2011 Subaru Impreza, 2005-2012 Subaru Legacy, and 2008-2014 Subaru Tribeca — see the Buyer's Guide tab for the full application list.
A vehicle speed sensor monitors output-shaft or wheel rotation and sends that signal to the powertrain control module and instrument cluster, which use it for the speedometer, cruise control, and shift scheduling. When the original sensor fails, replacing it restores that signal to the control module.
Signs the sensor may need replacing include an erratic or dead speedometer, cruise control that won't engage, harsh or erratic shifting, or a speed-related check engine light. Diagnose the cause before replacing, since these symptoms can have other sources.
Interchange: SN8388 · VSSA206 · VSS1220 · 31937AA071. Manufacturer part number SC686.
This part cross-references / interchanges with the following part numbers:
What does this vehicle speed sensor do?
It monitors rotational speed and sends that signal to the PCM and instrument cluster for the speedometer, cruise control, and transmission shift timing.
Which vehicles does the SC686 fit?
It's a direct-fit replacement for the 2005-2010 Subaru Forester, 2005-2011 Subaru Impreza, 2005-2012 Subaru Legacy, and 2008-2014 Subaru Tribeca. See the Buyer's Guide tab to confirm your vehicle.
What are the signs of a failing speed sensor?
An erratic or dead speedometer, cruise control that won't engage, harsh or erratic shifting, or a speed-related check engine light. Diagnose the cause before replacing.
What numbers does this sensor interchange with?
It cross-references SN8388, VSSA206, VSS1220, and 31937AA071. The manufacturer part number is SC686.
Will replacing this sensor fix my shifting or cruise control issue?
If the original speed sensor is the cause, replacing it restores the signal. Because these symptoms can have other sources, diagnose the problem first.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
