AutoCodes – Generic – C0277:09

C0277:09 Code - Brake Pedal Position Sensor Circuit Too Fast Transitions

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: C0277:09 indicates Brake Pedal Position Sensor Circuit Too Fast Transitions.
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 264

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 C0277:09 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 the brake pedal position sensor signal is changing faster than possible under normal operating conditions.

OBDII Code C0277:09 - Brake Pedal Position Sensor Circuit Too Fast Transitions - AutoCodes.com — C0277:09 Code - Brake Pedal Position Sensor Circuit Too Fast Transitions

What does this mean?

What are the Possible Causes of the DTC C0277:09?

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 C0277:09?

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 C0277:09 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 C0277:09 Code

1. What are the common symptoms of OBDII code C0277:09?

- Common symptoms include erratic brake pedal behavior, illuminated brake warning lights on the dashboard, and potential issues with the vehicle's stability control system.

2. What does the OBDII code C0277:09 indicate?

- This code indicates a problem with the brake pedal position sensor circuit, specifically that the transitions are occurring too rapidly.

3. What are the possible causes of OBDII code C0277:09?

- Possible causes include a faulty brake pedal position sensor, wiring issues in the sensor circuit, sensor calibration problems, or issues with the vehicle's electronic brake control module.

4. How can I diagnose the source of OBDII code C0277:09?

- Diagnosing this code typically involves checking the brake pedal position sensor for proper operation, inspecting the sensor circuit wiring for damage or poor connections, and performing a calibration of the sensor if necessary.

5. Can I continue driving with OBDII code C0277:09 present?

- It is not recommended to continue driving with this code present, as it can affect the proper operation of the vehicle's braking system and stability control.

6. How serious is OBDII code C0277:09?

- This code should be addressed promptly, as it can impact the safe operation of the vehicle by potentially affecting the accuracy of the brake pedal position sensor readings.

7. How can OBDII code C0277:09 be repaired?

- Repairing this code may involve replacing the brake pedal position sensor, repairing any damaged wiring in the sensor circuit, recalibrating the sensor, or addressing any issues with the electronic brake control module.

8. Can I reset OBDII code C0277:09 with a simple reset tool?

- While you may be able to clear the code temporarily with a reset tool, it is important to address the underlying issue causing the code to prevent it from reoccurring.

9. How much does it typically cost to repair OBDII code C0277:09?

- The cost of repairing this code can vary depending on the specific cause of the issue, but it may involve parts and labor costs for sensor replacement, wiring repairs, or recalibration procedures.

10. Is it possible to prevent OBDII code C0277:09 from occurring in the future?

- Regular maintenance of the brake pedal position sensor, checking for any signs of wear or damage in the sensor circuit wiring, and addressing any brake system issues promptly can help prevent this code from occurring in the future.