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Engine-Codes – GMC – P057C 2014 GMC Sierra

P057C 2014 GMC Sierra Code - Brake Pedal Position Sensor Circuit Low Voltage

Quick Answer

The P057C diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the Brake Pedal Position Sensor Circuit registering low voltage. Common causes include Faulty brake pedal position sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or debris affecting the sensor's functionality. 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
P057C 2014 GMC Sierra indicates Brake Pedal Position Sensor Circuit Low Voltage.
Common causes
Common causes include Faulty brake pedal position sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or debris affecting the sensor's functionality.
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 13, 2024
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Code P057C 2014 GMC Sierra Description

The P057C diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a problem with the Brake Pedal Position Sensor Circuit registering low voltage. The brake pedal position sensor is a crucial component of the vehicle's braking system, as it detects the position of the brake pedal and sends this information to the vehicle's electronic control module (ECM). This data is used to determine when and how much braking force should be applied, ensuring safe and efficient braking performance.

OBDII Code P057C 2014 GMC Sierra - Brake Pedal Position Sensor Circuit Low Voltage
P057C 2014 GMC Sierra Code - Brake Pedal Position Sensor Circuit Low Voltage

Common Causes of P057C 2014 GMC Sierra

  1. Faulty brake pedal position sensor.
  2. Damaged wiring or connectors in the sensor circuit.
  3. Corrosion or debris affecting the sensor's functionality.
  4. ECM software or hardware issues.
  5. Electrical system malfunctions impacting the sensor circuit.

Symptoms of P057C 2014 GMC Sierra

  1. Illumination of the ABS or traction control warning lights on the dashboard.
  2. Inconsistent or unresponsive braking behavior, such as delayed braking response or difficulty applying brakes.
  3. Loss of traction control functionality.
  4. Decreased fuel efficiency due to inefficient braking system operation.
  5. Possible stalling or engine performance issues related to the brake pedal position sensor malfunction.

How to Fix P057C 2014 GMC Sierra

  1. Begin by conducting a thorough diagnostic scan to confirm the P057C code and identify the specific cause of the issue.
  2. Inspect the brake pedal position sensor, wiring, and connectors for any visible damage or corrosion. Replace any damaged components as needed.
  3. Test the sensor circuit using a multimeter to check for proper voltage levels and continuity.
  4. Reset the ECM and clear the DTC to see if the issue persists after repairs.
  5. Conduct a road test to ensure that the brake pedal position sensor is functioning correctly and that all related systems are operating as intended.

Cost to Fix P057C 2014 GMC Sierra

The cost of repairing a P057C code on a 2014 GMC Sierra can vary depending on the specific cause of the issue and the labor rates in your area. On average, the parts for this repair, including a new brake pedal position sensor and any necessary wiring or connectors, may range from $50 to $150. Labor costs can add an additional $100 to $200, with total repair costs typically falling between $150 and $350. It's important to note that these estimates are general guidelines, and actual costs may differ based on individual circumstances and the repair shop's rates. Be sure to consult with a qualified mechanic for a more accurate cost estimate tailored to your vehicle's needs.

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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 P057C 2014 GMC Sierra Code

1. What does the OBDII code P057C mean on a 2014 GMC Sierra?

P057C indicates a low voltage issue in the Brake Pedal Position Sensor circuit, which monitors the position of the brake pedal.

2. What are the common symptoms of a P057C code in a 2014 GMC Sierra?

Symptoms may include the brake lights not functioning properly, cruise control not working, or the Check Engine Light being illuminated.

3. What causes the P057C code to appear in a 2014 GMC Sierra?

Common causes include a faulty brake pedal position sensor, damaged wiring or connectors in the sensor circuit, or a failing powertrain control module (PCM).

4. Can I drive my 2014 GMC Sierra with a P057C code?

It is not recommended to drive with this code active, as it may affect brake light operation and cruise control functionality, posing a safety risk.

5. How do I diagnose a P057C code on a 2014 GMC Sierra?

Start by inspecting the brake pedal position sensor, its wiring, and connectors for damage or corrosion. Use a multimeter to check for proper voltage and continuity in the circuit.

6. How do I fix the P057C code on a 2014 GMC Sierra?

Repairs may include replacing the brake pedal position sensor, repairing damaged wiring or connectors, or reprogramming/updating the PCM if necessary.

7. How much does it cost to fix the P057C code on a 2014 GMC Sierra?

The cost can vary but typically ranges from $100 to $300, depending on whether the sensor or wiring needs replacement.

8. Can a weak battery cause the P057C code in a 2014 GMC Sierra?

Yes, a weak or failing battery can sometimes cause low voltage issues in the brake pedal position sensor circuit.

9. Will clearing the P057C code with a scanner fix the problem?

Clearing the code won't fix the underlying issue. The problem must be diagnosed and repaired to prevent the code from returning.

10. Is the brake pedal position sensor hard to replace on a 2014 GMC Sierra?

Replacing the sensor is generally straightforward and involves disconnecting the wiring harness, unbolting the old sensor, and installing a new one. Always refer to the vehicle's service manual for specific instructions.

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