P0120 Volkswagen Code - Throttle Pedal Position Sensor/Switch 'A' Circuit
Quick Answer
The throttle position sensor (TPS) responds to the accelerator pedal movement. Common causes include Faulty Throttle Position Sensor, Throttle Position Sensor circuit is open or shorted, Throttle Position Sensor poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0120 Volkswagen indicates Throttle Pedal Position Sensor/Switch 'A' Circuit.
- Common causes
- Common causes include Faulty Throttle Position Sensor, Throttle Position Sensor circuit is open or shorted, Throttle Position Sensor poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0120 Volkswagen Description
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.
What are the Possible Causes of the DTC P0120 Volkswagen?
- Faulty Throttle Position Sensor
- Throttle Position Sensor circuit is open or shorted
- Throttle Position Sensor poor electrical connection
How to Fix the DTC P0120 Volkswagen?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0120 Volkswagen code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0120 Volkswagen Code
1. What are the common symptoms of OBDII code P0120 in a Volkswagen?
- Common symptoms include problems with acceleration, reduced engine power, stalling, and issues with the vehicle's throttle response.
2. What causes the OBDII code P0120 in a Volkswagen?
- The code P0120 is typically triggered by a faulty throttle pedal position sensor or switch, wiring issues, or a failed throttle body.
3. How can I diagnose the cause of the OBDII code P0120 in my Volkswagen?
- To diagnose the issue, you can use a scan tool to check for the specific trouble code, inspect the throttle pedal sensor and wiring for damage, and test the throttle body for proper operation.
4. Can I still drive my Volkswagen with the OBDII code P0120 present?
- It is not recommended to drive your vehicle with the P0120 code as it can lead to unsafe driving conditions and potential engine damage. It's best to address the issue promptly.
5. What are some repair tips for fixing the OBDII code P0120 in a Volkswagen?
- Repair tips include replacing the throttle pedal position sensor, repairing or replacing damaged wiring, and cleaning or replacing the throttle body if necessary.
6. How much does it cost to repair the OBDII code P0120 in a Volkswagen?
- The cost of repairing the P0120 code can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.
7. Is it possible to reset the OBDII code P0120 in a Volkswagen without fixing the underlying issue?
- While you can clear the trouble code using a scan tool, it is crucial to address the underlying problem causing the code to prevent it from reoccurring.
8. Can a DIY enthusiast fix the OBDII code P0120 in a Volkswagen?
- Depending on your mechanical skills and access to tools, repairing the P0120 code yourself is possible for some individuals, especially if it involves simple tasks like sensor replacement or wiring repair.
9. Are there any recalls or technical service bulletins related to the OBDII code P0120 in Volkswagen vehicles?
- Volkswagen may have issued recalls or technical service bulletins related to the P0120 code, so it's advisable to check with a Volkswagen dealership or online resources for any relevant information.
10. How can I prevent the OBDII code P0120 from appearing in my Volkswagen in the future?
- To prevent the P0120 code, you should perform regular maintenance on your vehicle, address any warning signs promptly, and avoid driving aggressively to reduce wear on the throttle system.
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