AutoCodes – GMC – P057C 2018 GMC Sierra

P057C 2018 GMC Sierra Code - Brake Pedal Position Sensor Circuit Low Voltage

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: P057C 2018 GMC Sierra indicates Brake Pedal Position Sensor Circuit Low Voltage.
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 198

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 14, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P057C 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 is less than 0.25 V for greater than 1 s.

OBDII Code P057C 2018 GMC Sierra - Brake Pedal Position Sensor Circuit Low Voltage - AutoCodes.com — P057C 2018 GMC Sierra Code - Brake Pedal Position Sensor Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P057C 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 P057C 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 P057C 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 P057C 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 P057C 2018 GMC Sierra Code

What does the OBDII code P057C mean for a 2018 GMC Sierra?

The OBDII code P057C indicates that there is low voltage detected in the brake pedal position sensor circuit, which can affect the vehicle's braking system and related safety features.

What are common symptoms of the P057C code?

Common symptoms include the brake warning light illuminating on the dashboard, erratic cruise control operation, and possible issues with the vehicle's ability to shift gears smoothly.

What could cause the P057C code to trigger?

Causes may include a faulty brake pedal position sensor, damaged wiring or connectors in the sensor circuit, or issues with the vehicle's powertrain control module (PCM).

How can I diagnose the P057C code?

To diagnose the P057C code, start with a visual inspection of the brake pedal position sensor and its wiring. Use a multimeter to check for proper voltage and continuity in the circuit.

What repairs are typically required for the P057C code?

Repairs may involve replacing the brake pedal position sensor, repairing damaged wiring or connectors, or reprogramming or replacing the PCM if it is determined to be faulty.

Can I drive my GMC Sierra with the P057C code?

While it is possible to drive the vehicle, it is not recommended as the brake system may not function properly, which can pose a safety risk.

Will clearing the P057C code fix the problem?

Clearing the code may temporarily turn off the warning light, but if the underlying issue is not resolved, the code will likely reappear.

Is the P057C code specific to the GMC Sierra?

No, the P057C code is a standard OBDII code that can apply to various vehicles, but the specific symptoms and repairs may vary by make and model.

What should I do if I can't find the source of the P057C code?

If you're unable to identify the issue, it's advisable to take the vehicle to a qualified mechanic or dealership for a comprehensive diagnostic assessment.