P0122 Volkswagen Code - Throttle Pedal Position Sensor/Switch 'A' Circuit Low
Quick Answer
The Throttle Pedal Position (TPP) responds to the accelerator pedal movement. Common causes include Faulty throttle pedal position sensor, Throttle pedal position sensor harness is open or shorted, Throttle pedal position sensor circuit 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
- P0122 Volkswagen indicates Throttle Pedal Position Sensor/Switch 'A' Circuit Low.
- Common causes
- Common causes include Faulty throttle pedal position sensor, Throttle pedal position sensor harness is open or shorted, Throttle pedal position sensor circuit 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 P0122 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 P0122 Volkswagen?
- Faulty throttle pedal position sensor
- Throttle pedal position sensor harness is open or shorted
- Throttle pedal position sensor circuit poor electrical connection
How to Fix the DTC P0122 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 P0122 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 P0122 Volkswagen Code
1. What are the common symptoms of OBDII code P0122 in a Volkswagen?
- Common symptoms include reduced engine power, sluggish acceleration, stalling, and illuminated Check Engine Light.
2. What does the OBDII code P0122 in a Volkswagen indicate?
- The code indicates a low voltage condition in the throttle pedal position sensor/switch 'A' circuit.
3. What are the possible causes of OBDII code P0122 in a Volkswagen?
- Possible causes include a faulty throttle pedal position sensor, damaged wiring or connectors, and issues with the throttle body.
4. How can I diagnose the cause of OBDII code P0122 in my Volkswagen?
- Diagnose by checking the throttle pedal position sensor's voltage output, inspecting wiring for damage, and scanning for related trouble codes.
5. Can I drive my Volkswagen with OBDII code P0122?
- It is not recommended to drive your vehicle with this code present, as it can lead to potential safety hazards and further damage to the engine.
6. How can I repair OBDII code P0122 in my Volkswagen?
- Repair options include replacing the throttle pedal position sensor, repairing damaged wiring, and addressing any underlying issues with the throttle body.
7. Will resetting the Check Engine Light fix OBDII code P0122 in my Volkswagen?
- Resetting the light may temporarily clear the code, but it will likely reappear until the underlying issue is properly diagnosed and repaired.
8. Is it safe to continue driving my Volkswagen if the throttle pedal position sensor is faulty?
- Driving with a faulty throttle pedal position sensor can be unsafe and may lead to unpredictable acceleration and engine performance. It is best to address the issue promptly.
9. Can extreme weather conditions affect the throttle pedal position sensor and trigger OBDII code P0122 in a Volkswagen?
- Yes, extreme heat or cold can affect sensor performance and potentially trigger the code. Ensure proper insulation and protection in such conditions.
10. How long does it typically take to repair OBDII code P0122 in a Volkswagen?
- The repair time can vary depending on the exact cause of the code, but it typically takes a few hours to a day for diagnosis and replacement of the faulty components.
Discuss the causes and fixes for P0122 Volkswagen OBDII Code
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The EPC and check engine light turn on, but turn off for a few minutes when the sensors are adjusted in the acceleration pedal or the throttle. The throttle does not open fully when the pedal is fully pressed down (only opens about half way). When fully pressed down the car does not really accelerate. It goes normally then stops accelerating for a little and shutters then continues to accelerate it does this more often with increasing speed. When the light is erased it and the sensors are adjusted it works again for a little then goes back not accelerating correctly.
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Hi. How did you sort out this problem? Will replacing the throttle body help?
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