Engine-CodesBMW – P1120 BMW

P1120 BMW Code - Pedal Position Sensor Circuit

Quick Answer

The P1120 code for BMW vehicles indicates an issue with the pedal position sensor circuit. Common causes include Faulty pedal position sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or debris affecting sensor performance. 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
P1120 BMW indicates Pedal Position Sensor Circuit.
Common causes
Common causes include Faulty pedal position sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or debris affecting sensor performance.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1120 BMW Description

The P1120 code for BMW vehicles indicates an issue with the pedal position sensor circuit. This sensor is responsible for monitoring the position of the accelerator pedal and sending this information to the engine control module (ECM) to adjust the throttle accordingly. When this circuit malfunctions, it can lead to a variety of performance issues and potentially affect the overall driving experience.

OBDII Code P1120 BMW - Pedal Position Sensor Circuit
P1120 BMW Code - Pedal Position Sensor Circuit

Common Causes of P1120 BMW

  1. Faulty pedal position sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Corrosion or debris affecting sensor performance
  4. ECM software issues
  5. Electrical system malfunctions

Symptoms of P1120 BMW

  1. Hesitation or delayed response when pressing the accelerator pedal
  2. Engine stalling or rough idling
  3. Reduced power or acceleration
  4. Illumination of the Check Engine Light
  5. Vehicle going into limp mode

How to Fix P1120 BMW

  1. Begin by conducting a thorough inspection of the pedal position sensor, wiring, and connectors to identify any visible damage or corrosion.
  2. Test the sensor using a multimeter to check for proper voltage output and resistance values.
  3. Replace the pedal position sensor if it is found to be faulty or not functioning correctly.
  4. Repair or replace any damaged wiring or connectors in the sensor circuit.
  5. Clear the diagnostic trouble codes and perform a test drive to ensure the issue has been resolved.

Cost to Fix P1120 BMW

The cost of repairing a P1120 code for BMW vehicles can vary depending on the specific cause of the issue. On average, parts for a pedal position sensor replacement can range from $50 to $150, while labor costs can range from $100 to $200. Overall, the total repair cost for addressing this code typically falls between $150 and $350. However, it's important to note that labor rates and part prices can fluctuate based on location, vehicle make and model, and the specific repair shop. It is recommended to obtain quotes from multiple auto repair shops to get a more accurate estimate for this repair.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1120 BMW Code

1. What are the common symptoms of OBDII code P1120 in a BMW related to the Pedal Position Sensor Circuit?

- Common symptoms include poor acceleration, decreased engine performance, and potential issues with the vehicle's electronic throttle control.

2. What are the possible causes of OBDII code P1120 in a BMW related to the Pedal Position Sensor Circuit?

- The code may be triggered by a faulty pedal position sensor, wiring issues in the sensor circuit, or a malfunction in the electronic throttle control system.

3. How can I diagnose the cause of OBDII code P1120 in my BMW related to the Pedal Position Sensor Circuit?

- Diagnosis typically involves using a diagnostic scanner to read the code, testing the pedal position sensor for proper voltage and signal output, and checking the wiring for any damage or loose connections.

4. Can I continue driving my BMW with OBDII code P1120 related to the Pedal Position Sensor Circuit?

- It is not recommended to drive your vehicle with this code present, as it can lead to further damage and potential safety issues. It is best to address the problem promptly.

5. What are some repair tips for fixing OBDII code P1120 in a BMW related to the Pedal Position Sensor Circuit?

- Repair may involve replacing the pedal position sensor, repairing any damaged wiring, or recalibrating the electronic throttle control system. It is advisable to consult a professional mechanic for accurate diagnosis and repair.

6. How much does it typically cost to repair OBDII code P1120 in a BMW related to the Pedal Position Sensor Circuit?

- The cost of repair can vary depending on the exact cause of the issue and the specific model of BMW. It is recommended to obtain a few quotes from different mechanics to compare prices.

7. Are there any preventive measures to avoid OBDII code P1120 related to the Pedal Position Sensor Circuit in my BMW?

- Regular maintenance, such as inspecting and cleaning the throttle body and ensuring proper sensor function during routine checks, can help prevent issues that may trigger this code.

8. Can a DIY enthusiast fix OBDII code P1120 related to the Pedal Position Sensor Circuit in a BMW?

- While some may have the skills to diagnose and replace the pedal position sensor, it is recommended to seek professional help for accurate diagnosis and repair, especially when dealing with electronic components.

9. How long does it take to repair OBDII code P1120 related to the Pedal Position Sensor Circuit in a BMW?

- The repair time can vary depending on the exact issue and the expertise of the mechanic. In general, it may take a few hours to a full day to diagnose and fix the problem.

10. Is it safe to reset the OBDII code P1120 related to the Pedal Position Sensor Circuit in my BMW without addressing the underlying issue?

- Resetting the code without addressing the root cause can lead to the problem persisting and potentially causing further damage. It is best to diagnose and fix the issue before clearing the code.

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