AutoCodesGMC – P057E 2018 GMC Sierra

P057E 2018 GMC Sierra Code - Brake Pedal Position Sensor Circuit Erratic

Quick Answer

The Brake Pedal Position (BPP) sensor is used to sense the action of the driver's application of the brake pedal. Common causes include Brake Pedal Position Sensor Calibration, Faulty Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted. 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
P057E 2018 GMC Sierra indicates Brake Pedal Position Sensor Circuit Erratic.
Common causes
Common causes include Brake Pedal Position Sensor Calibration, Faulty Brake Pedal Position Sensor, Brake Pedal Position Sensor harness is open or shorted.
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 208
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 14, 2022
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Code P057E 2018 GMC Sierra Description

The Brake Pedal Position (BPP) 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 Brake Pedal Position Sensor contains 2 potentiometer-type brake pedal position sensors. When the pedal is pressed, the voltage of one sensor goes up and the voltage of the other sensor goes down. The Diagnostic Trouble Code (DTC) will be set when the Brake Pedal Position Sensor signal is noisy or erratic.
OBDII Code P057E 2018 GMC Sierra - Brake Pedal Position Sensor Circuit Erratic - AutoCodes.com
P057E 2018 GMC Sierra Code - Brake Pedal Position Sensor Circuit Erratic

What are the Possible Causes of the DTC P057E 2018 GMC Sierra?

  • Brake Pedal Position Sensor Calibration
  • Faulty Brake Pedal Position Sensor
  • Brake Pedal Position Sensor harness is open or shorted
  • Brake Pedal Position Sensor circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P057E 2018 GMC Sierra?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P057E 2018 GMC Sierra 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.

Need more information about the P057E 2018 GMC Sierra code?

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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 P057E 2018 GMC Sierra Code

Q: What does the OBDII code P057E mean for a 2018 GMC Sierra?

A: Code P057E indicates an erratic signal from the brake pedal position sensor circuit, which monitors the position and movement of the brake pedal.

Q: What are the common symptoms of code P057E in a 2018 GMC Sierra?

A: Symptoms may include a check engine light, reduced brake responsiveness, issues with cruise control, and erratic braking system behavior.

Q: What causes the P057E Brake Pedal Position Sensor Circuit Erratic code?

A: Common causes include a faulty brake pedal position sensor, damaged wiring, loose connections, or issues with the sensor’s mounting.

Q: Can I still drive my 2018 GMC Sierra with code P057E active?

A: While it may be possible to drive, it is not recommended as the issue could impact braking performance or disable safety features like cruise control.

Q: How is the P057E code diagnosed?

A: Diagnosis typically involves inspecting the brake pedal position sensor, testing the circuit for erratic signals, and checking the wiring and connectors for damage.

Q: How do I fix code P057E on a 2018 GMC Sierra?

A: Repairs may include replacing the brake pedal position sensor, repairing damaged wiring, or securing loose connections in the sensor circuit.

Q: How much does it cost to fix the P057E code on a 2018 GMC Sierra?

A: Repair costs vary but can range from $100 to $300 depending on whether just the sensor or additional wiring needs replacement.

Q: Can a dirty brake pedal position sensor cause code P057E?

A: Yes, dirt or debris interfering with the sensor’s function can cause erratic signals and trigger the code.

Q: Does code P057E affect the operation of cruise control in a 2018 GMC Sierra?

A: Yes, the erratic signal from the brake pedal position sensor may disable cruise control functionality for safety reasons.

Q: Is a brake pedal position sensor reset required after replacing it?

A: Yes, after replacing the sensor, recalibrating or resetting it may be necessary to ensure proper operation and clear the code.

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