AutoCodes – Chevrolet – C12B1 2015 Chevrolet Silverado

C12B1 2015 Chevrolet Silverado Code - ABS Master Cylinder Pressure Sensor and Brake Pedal Position Sensor Not Plausible

Quick Answer

The Electronic Brake Control Module uses inputs from the Electronic Brake Control Brake Pedal Position Sensor to determine when the brake is applied and how much force is used. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake Control Module 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: C12B1 2015 Chevrolet Silverado indicates ABS Master Cylinder Pressure Sensor and Brake Pedal Position Sensor Not Plausible.
Common causes: Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake Control Module 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 176

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 13, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C12B1 2015 Chevrolet Silverado Description

The Electronic Brake Control Module uses inputs from the Electronic Brake Control Brake Pedal Position Sensor to determine when the brake is applied and how much force is used. The Electronic Brake Control Module monitors when the driver's foot is on the brake and locks the offset. The offset is locked when three out of the four inputs indicate the brake pedal is applied. The four inputs are brake pedal travel 1, brake pedal travel 2, master cylinder pressure sensor, and brake pedal position sensor. These inputs are used to determine the driver's braking intent which is used to control the amount of pressure applied to the wheels.
Brake pressure sensor information is communicated from the Electronic Brake Control Module (EBCM) to the Hybrid Control Processor (HCP). This information is used to schedule regenerative braking and engine autostops.
The Diagnostic Trouble Code (DTC) will be set when the Engine Control Module (ECM) detects a corrupted data message from the Electronic Brake Control Module.

OBDII Code C12B1 2015 Chevrolet Silverado - ABS Master Cylinder Pressure Sensor and Brake Pedal Position Sensor Not Plausible - AutoCodes.com — C12B1 2015 Chevrolet Silverado Code - ABS Master Cylinder Pressure Sensor and Brake Pedal Position Sensor Not Plausible

What does this mean?

What are the Possible Causes of the DTC C12B1 2015 Chevrolet Silverado?

Faulty Electronic Brake Control Module (EBCM)
Electronic Brake Control Module harness is open or shorted
Electronic Brake Control Module circuit poor electrical connection
Faulty Starter/Generator Control Module

How to Fix the DTC C12B1 2015 Chevrolet Silverado?

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 C12B1 2015 Chevrolet Silverado 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 C12B1 2015 Chevrolet Silverado code?

Need more information on how to fix the C12B1 2015 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 C12B1 2015 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code C12B1 on a 2015 Chevrolet Silverado?

- Common symptoms include the ABS warning light being illuminated on the dashboard, potential loss of ABS functionality, and possible issues with the vehicle's braking system.

2. What does the ABS Master Cylinder Pressure Sensor do in a 2015 Chevrolet Silverado?

- The ABS Master Cylinder Pressure Sensor is responsible for monitoring the hydraulic pressure in the brake system, helping to ensure proper ABS operation and brake performance.

3. What can cause the ABS Master Cylinder Pressure Sensor and Brake Pedal Position Sensor to show a "Not Plausible" error?

- Possible causes of this error can include sensor malfunctions, wiring issues, sensor calibration problems, or faults in the ABS control module.

4. How can I diagnose the ABS Master Cylinder Pressure Sensor and Brake Pedal Position Sensor issues on my 2015 Chevrolet Silverado?

- To diagnose these issues, it is recommended to perform a thorough inspection of the sensors, check for any visible damage or loose connections, and use a diagnostic scanner to read the specific fault codes.

5. Can I continue driving my 2015 Chevrolet Silverado with the ABS Master Cylinder Pressure Sensor and Brake Pedal Position Sensor error?

- It is not advisable to drive the vehicle with ABS sensor errors as it can compromise the effectiveness of the braking system, leading to potential safety risks. Immediate attention and repair are recommended.

6. Are there any DIY repair tips for fixing the ABS Master Cylinder Pressure Sensor and Brake Pedal Position Sensor issues?

- DIY repair tips may include checking and cleaning sensor connections, inspecting wiring for damage, ensuring proper sensor alignment, and resetting the ABS system after any repairs are made.

7. How much does it typically cost to repair the ABS Master Cylinder Pressure Sensor and Brake Pedal Position Sensor on a 2015 Chevrolet Silverado?

- The cost of repair can vary depending on the extent of the issue, parts needed, and labor rates. It is recommended to consult a mechanic or dealership for an accurate estimate.

8. Can a faulty ABS Master Cylinder Pressure Sensor and Brake Pedal Position Sensor cause other problems in my 2015 Chevrolet Silverado?

- Yes, a faulty ABS sensor can potentially lead to issues with the vehicle's overall braking performance, ABS functionality, and even affect other safety systems in the vehicle.

9. How long does it typically take to repair the ABS Master Cylinder Pressure Sensor and Brake Pedal Position Sensor issue on a 2015 Chevrolet Silverado?

- The repair time can vary depending on the complexity of the issue and the availability of parts. In general, it may take a few hours to a full day to diagnose and repair the ABS sensor problem.

10. Is it necessary to reset the ABS system after fixing the ABS Master Cylinder Pressure Sensor and Brake Pedal Position Sensor issue?

- Yes, it is recommended to reset the ABS system after any repairs are made to ensure proper calibration and functionality of the sensors and the overall ABS system in the vehicle.