Throttle/Pedal Position Sensor/Switch B/C Voltage Correlation

Where it lives

For P2137, start at the sensor the description names.

Check these first

• A throttle or pedal position sensor B or C reading that disagrees with the other
• An open or short in the sensor B or C circuit
• Corrosion at the sensor B or C connector
• A failed throttle pedal assembly

What to do next

1. Read throttle and pedal position sensor B and C on a scan tool
2. Compare the two sensor readings through the pedal travel
3. Test the sensor B and C circuits for open and short faults
4. Check the sensor B and C connectors for corrosion
5. Replace the sensor that reads off
6. Clear the code and retest

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