Vehicle Speed Sensor (VSS) Malfunction
Plain-English meaning
The vehicle's speed sensor is not sending a proper signal to the engine control module, indicating a problem with speed measurement.
What to check first
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What not to replace yet
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Stop driving when
You do not need to stop driving immediately, but have the vehicle inspected soon to avoid potential transmission or speed-related issues.
Related symptoms
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Owner steps
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Likely causes
Faulty vehicle speed sensor (medium)
Damaged or corroded wiring or connectors (medium)
Failed speed sensor reluctor ring (medium)
Faulty engine control module (ECM) (medium)
Mechanical issues affecting sensor operation (medium)
Shop steps
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Follow-up questions
Are there any other diagnostic trouble codes present?
Is the speedometer displaying any readings or completely non-functional?
Has the vehicle experienced recent impacts or repairs near the sensor area?
Is the transmission exhibiting abnormal shifting behavior?