Control Module VSS Output A

Where it lives

For P0608, start at the module the description names.

Check these first

• A short or open in the VSS output A wire
• Corrosion at the output A connector
• A failed vehicle speed sensor feeding the module
• A faulty PCM output driver
• A wiring fault between the PCM and the module that reads output A

What to do next

1. Check for other speed sensor codes first
2. Inspect the output A wire and connector for damage
3. Monitor the VSS signal on a scan tool while driving
4. Test the output A circuit for an open or short
5. Replace the vehicle speed sensor if the signal drops out
6. Clear the code and retest

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