Vehicle Speed Sensor B Circuit Intermittent/Erratic/High

Where it lives

For P2161, the circuit described runs through the sensor. The description of P2161 reports a fault at the sensor.

Check these first

• A failed vehicle speed sensor B
• A short or an intermittent fault in the sensor B circuit
• Corrosion at the sensor B connector
• Electrical interference on the sensor B signal
• Low battery voltage

What to do next

1. Read the vehicle speed sensor B signal on a scan tool
2. Watch the sensor B signal for dropouts on a test drive
3. Test the sensor B circuit for a short or an open
4. Inspect the sensor B connector for corrosion
5. Replace the vehicle speed sensor B if the signal is erratic
6. Clear the code and retest

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