Engine-Codes - Volkswagen - P0122 Volkswagen

P0122 Volkswagen Code - Throttle Pedal Position Sensor/Switch 'A' Circuit Low

- Code Popularity: 42,871 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
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What are the Possible Causes of the DTC P0122 Volkswagen?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty throttle pedal position sensor
  • Throttle pedal position sensor harness is open or shorted
  • Throttle pedal position sensor circuit poor electrical connection
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How to Fix the DTC P0122 Volkswagen?

Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the P0122 Volkswagen code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

When is the Code Detected?

An excessively low voltage from the Throttle Pedal Position (TPP) Sensor is sent to Engine Control Module (ECM).

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

What Does the P0122 Volkswagen Code Mean?

The Throttle Pedal Position (TPP) responds to the accelerator pedal movement. This sensor is a kind of potentiometer which transforms the throttle position into output voltage, and emits the voltage signal to the Engine Control Module (ECM). In addition, the sensor detects the opening and closing speed of the throttle valve and feeds the voltage signal to the ECM.
Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sensor. This sensor controls engine operation such as fuel cut. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control.

P0122 Volkswagen Code - Throttle Pedal Position Sensor/Switch 'A' Circuit Low

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