AutoCodes – Buick – C0277 Buick

C0277 Buick Code - Brake Pedal Position Sensor Circuit

Quick Answer

The brake pedal position sensor is used to sense the action of the driver's application of the brake pedal. Common causes include Faulty Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted, Brake 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: C0277 Buick indicates Brake Pedal Position Sensor Circuit.
Common causes: Common causes include Faulty Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted, Brake 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.

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Code Popularity 3,613

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 05, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code C0277 Buick Description

The brake pedal position sensor is used to sense the action of the driver's application of the brake pedal. The brake pedal position sensor provides an analog voltage signal that will increase as the brake pedal is applied. The Body Control Module (BCM) provides a low reference signal and a 5 V reference voltage to the brake pedal position sensor. When the variable signal reaches a voltage threshold indicating the brakes have been applied, the BCM will apply battery voltage to the left and right stop lamp control circuits as well as the center high-mounted stop lamp relay control circuit illuminating the left and right stop lamps and the center high mounted stop lamp. The Diagnostic Trouble Code (DTC) will be set when the BCM detects an improper voltage in the brake pedal position sensor 5 V reference circuit.

OBDII Code C0277 Buick - Brake Pedal Position Sensor Circuit - AutoCodes.com — C0277 Buick Code - Brake Pedal Position Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC C0277 Buick?

Faulty Brake Pedal Position Sensor
Brake Pedal Position Sensor harness is open or shorted
Brake Pedal Position Sensor circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC C0277 Buick?

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 does this mean?

Code Tech Notes

C0277:06 Brake Pedal Position Sensor Circuit Low Voltage/Open
C0277:07 Brake Pedal Position Sensor Circuit High Voltage
C0277:09 Brake Pedal Position Sensor Circuit Too Fast Transitions
C0277:12 Brake Pedal Position Sensor Circuit Below Minimum Threshold
C0277:4B Brake Pedal Position Sensor Circuit Calibration Not Learned

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C0277 Buick 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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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 C0277 Buick Code

1. What are the common symptoms of OBDII code C0277 in a Buick related to the Brake Pedal Position Sensor Circuit?

The common symptoms include issues with the brake lights, traction control system, and possibly the cruise control not functioning properly.

2. What are the possible causes of OBDII code C0277 in a Buick related to the Brake Pedal Position Sensor Circuit?

Possible causes include a faulty brake pedal position sensor, wiring issues, a bad brake light switch, or a problem with the traction control system.

3. How can I diagnose the Brake Pedal Position Sensor Circuit issue in my Buick?

You can diagnose the issue by checking the brake lights to see if they are working properly, inspecting the brake pedal position sensor and its wiring for any damages, and using a diagnostic scan tool to retrieve the specific error code.

4. Can I still drive my Buick with OBDII code C0277 related to the Brake Pedal Position Sensor Circuit?

It is not recommended to drive your Buick with this code as it can affect the proper functioning of important safety systems like the brake lights and traction control.

5. How can I repair OBDII code C0277 in my Buick related to the Brake Pedal Position Sensor Circuit?

Repairing the issue may involve replacing the brake pedal position sensor, fixing any wiring problems, or replacing the brake light switch if necessary.

6. Will resetting the error code make OBDII code C0277 disappear permanently?

Resetting the error code may temporarily clear the warning light, but if the underlying issue is not fixed, the code is likely to reappear after some driving cycles.

7. Can a DIY enthusiast fix OBDII code C0277 related to the Brake Pedal Position Sensor Circuit in a Buick?

Depending on your mechanical skills and access to tools, you may be able to fix this issue yourself by following repair guides or tutorials specific to your Buick model.

8. Is it necessary to visit a mechanic for OBDII code C0277 related to the Brake Pedal Position Sensor Circuit?

While it is not mandatory, seeking assistance from a professional mechanic is advisable, especially if you are uncertain about diagnosing or repairing the issue yourself.

9. Are there any recalls related to OBDII code C0277 in Buick vehicles?

Recalls related to this specific OBDII code can vary, so it's recommended to check with Buick's official website or contact a dealership to inquire about any relevant recalls for your vehicle.

10. How much should I expect to pay for repairing OBDII code C0277 in my Buick related to the Brake Pedal Position Sensor Circuit?

The cost of repairing this issue can vary depending on the exact cause of the problem, labor rates in your area, and whether genuine Buick parts are needed. It's best to obtain quotes from different mechanics or service centers for a more accurate estimate.