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Engine-Codes – Buick – P1125 Buick

P1125 Buick Code - Accelerator Pedal Position Sensor Fault

Quick Answer

The P1125 Buick code indicates a fault with the Accelerator Pedal Position Sensor (APPS). Common causes include Faulty accelerator pedal position sensor, Wiring or connector issues, Damaged throttle body. 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
P1125 Buick indicates Accelerator Pedal Position Sensor Fault.
Common causes
Common causes include Faulty accelerator pedal position sensor, Wiring or connector issues, Damaged throttle body.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code P1125 Buick Description

The P1125 Buick code indicates a fault with the Accelerator Pedal Position Sensor (APPS). The APPS is a sensor that monitors the position of the accelerator pedal and sends this information to the Engine Control Module (ECM). This data is crucial for the ECM to determine the correct air-fuel mixture and ignition timing for optimal engine performance. When the APPS fails or malfunctions, it can lead to a variety of issues that affect the vehicle's drivability and overall performance.

OBDII Code P1125 Buick - Accelerator Pedal Position Sensor Fault
P1125 Buick Code - Accelerator Pedal Position Sensor Fault

Common Causes of P1125 Buick

  1. Faulty accelerator pedal position sensor
  2. Wiring or connector issues
  3. Damaged throttle body
  4. Issues with the ECM
  5. Corrosion or contamination in the sensor components

Symptoms of P1125 Buick

  1. Hesitation or lack of response when accelerating
  2. Poor fuel efficiency
  3. Rough idling
  4. Stalling
  5. Illuminated check engine light

How to Fix P1125 Buick

  1. Diagnose the issue by using a scan tool to read the fault codes and test the accelerator pedal position sensor for proper function.
  2. Inspect the wiring and connectors for any signs of damage or corrosion, and repair or replace as necessary.
  3. Check the throttle body for any obstructions or damage, and clean or replace if needed.
  4. If the issue persists, consider replacing the accelerator pedal position sensor or recalibrating it according to manufacturer's specifications.

Cost to Fix P1125 Buick

The typical repair costs for an Accelerator Pedal Position Sensor Fault can range from $150 to $400, depending on the extent of the issue, the cost of parts, and the labor rates at the auto repair shop. It's important to note that specific diagnosis time and labor rates can vary based on factors such as location, vehicle make and model, and engine type. Auto repair shops commonly charge between $80 and $150 per hour for labor, but rates may be higher at dealerships or in metropolitan areas, while independent shops may offer lower rates. It's recommended to obtain local quotes for a more accurate estimate.

When is the Code Detected?

The Powertrain Control Module (PCM) detects that the difference between Accelerator Pedal Position (APP) sensor 1 and APP sensor 2 is more than the predicted value.

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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 P1125 Buick Code

1. What are the common symptoms of OBDII code P1125 in a Buick related to the accelerator pedal position sensor fault?

- Common symptoms include issues with acceleration, stalling, rough idling, and a decrease in overall vehicle performance.

2. What are the possible causes of OBDII code P1125 in a Buick indicating an accelerator pedal position sensor fault?

- The code can be triggered by a faulty accelerator pedal position sensor, wiring issues, or a problem with the electronic control module.

3. How can I diagnose the OBDII code P1125 in my Buick related to the accelerator pedal position sensor fault?

- A diagnostic scan tool can help identify the specific issue by reading the code and providing data on the accelerator pedal position sensor's performance.

4. Can a faulty accelerator pedal position sensor be repaired, or does it need to be replaced when triggering OBDII code P1125 in a Buick?

- In most cases, a faulty accelerator pedal position sensor will need to be replaced to resolve the issue triggering the P1125 code.

5. Are there any simple troubleshooting steps I can take before replacing the accelerator pedal position sensor for OBDII code P1125 in my Buick?

- It's recommended to check the wiring connections to the sensor and ensure they are secure and free of damage before considering sensor replacement.

6. How critical is it to address OBDII code P1125 in a Buick related to the accelerator pedal position sensor fault promptly?

- It is important to address the issue promptly as driving with a faulty accelerator pedal position sensor can lead to unsafe driving conditions and potential further damage to the vehicle.

7. Can resetting the OBDII code P1125 in a Buick resolve the accelerator pedal position sensor fault temporarily?

- Resetting the code may temporarily clear the warning light, but the underlying issue with the accelerator pedal position sensor will likely persist and trigger the code again.

8. Is it safe to continue driving my Buick with the OBDII code P1125 related to the accelerator pedal position sensor fault illuminated?

- It is not recommended to continue driving the vehicle with the warning light on, as it indicates a potential issue that can affect the vehicle's performance and safety.

9. Will a mechanic be able to provide a more accurate diagnosis of the OBDII code P1125 in my Buick than a DIY scan tool?

- A mechanic will have the expertise to perform a more in-depth diagnosis, including testing the sensor's functionality and identifying any other related issues that may be causing the fault.

10. How much can I expect to pay for parts and labor to repair the accelerator pedal position sensor fault triggering OBDII code P1125 in my Buick?

- The cost of parts and labor for replacing the accelerator pedal position sensor can vary depending on the vehicle model, labor rates, and any additional components that may need attention, but it typically ranges from $150 to $400.

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