P0220 Code - Throttle/Petal Position Sensor/Switch 'B' Circuit Malfunction

What Does P0220 Mean?

This code indicates that the PCM has detected a throttle petal position sensor switch B circuit voltage reading that is abnormal.

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What are the common causes of P0220 ?

The most common causes of code P0220 could include the following-

• Damaged, short circuited, or corroded wiring and connectors
• Defective TPS or pedal sensors
• Mal-adjusted TPS sensors
• Mechanical wear in the TPS sensor and/or throttle body
• Carbon deposits in the throttle body that impede the movement of the throttle plate
• While PCM failures do happen, it is a rare event and the fault must be sought elsewhere before any controller is replaced

How do you troubleshoot P0220 ?

• Replacing the throttle position sensor
• Replacing the accelerator pedal position sensor
• Replacing the throttle body
• Replacing the powertrain control module
• Repairing or replacing wiring that is associated with the throttle’s electrical system
• Realigning the throttle position sensor or accelerator position sensor to its correct position.

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