Vehicle Speed Sensor B Circuit

Where it lives

For P2158, the circuit described runs through the sensor. The description of P2158 reports a fault at the sensor.

Check these first

• A failed vehicle speed sensor B
• An open or short in the vehicle speed sensor B wiring
• Corrosion at the vehicle speed sensor B connector
• A transmission or transaxle fault skewing the speed signal
• A failed ECM or PCM

What to do next

1. Read the vehicle speed sensor B signal on a scan tool
2. Compare sensor B to the primary speed sensor A
3. Test the sensor B wiring for an open or a short
4. Inspect the sensor B connector for corrosion
5. Replace the vehicle speed sensor B if the wiring tests good
6. Clear the code and retest

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