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

Where it lives

For P2135, the part to look at first is the sensor named here.

Check these first

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

What to do next

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

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