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C0161 2017 GMC Sierra Code - Antilock Braking System Brake Switch Circuit

Quick Answer

The C0161 diagnostic trouble code (DTC) for a 2017 GMC Sierra pertains to the Antilock Braking System (ABS) Brake Switch Circuit. Common causes include Faulty brake switch, Damaged wiring or connectors in the brake switch circuit, Malfunctioning ABS control module. 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
C0161 2017 GMC Sierra indicates Antilock Braking System Brake Switch Circuit.
Common causes
Common causes include Faulty brake switch, Damaged wiring or connectors in the brake switch circuit, Malfunctioning ABS control module.
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 11, 2024
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Code C0161 2017 GMC Sierra Description

The C0161 diagnostic trouble code (DTC) for a 2017 GMC Sierra pertains to the Antilock Braking System (ABS) Brake Switch Circuit. This code indicates a problem with the communication between the brake switch and the ABS control module. The brake switch is a crucial component that informs the ABS system when the brake pedal is being pressed, allowing the system to activate and prevent wheel lock-up during braking.

OBDII Code C0161 2017 GMC Sierra - Antilock Braking System Brake Switch Circuit
C0161 2017 GMC Sierra Code - Antilock Braking System Brake Switch Circuit

Common Causes of C0161 2017 GMC Sierra

  1. Faulty brake switch.
  2. Damaged wiring or connectors in the brake switch circuit.
  3. Malfunctioning ABS control module.
  4. Corrosion or moisture in the brake switch circuit.
  5. Electrical issues such as short circuits or open circuits in the ABS system.

Symptoms of C0161 2017 GMC Sierra

  1. ABS warning light illuminated on the dashboard.
  2. Decreased braking performance or longer stopping distances.
  3. Inconsistent ABS system activation during braking.
  4. Loss of ABS functionality in slippery road conditions.
  5. Difficulty maintaining control during emergency braking situations.

How to Fix C0161 2017 GMC Sierra

  1. Begin by inspecting the brake switch, wiring, and connectors for any visible damage or corrosion.
  2. Test the brake switch using a multimeter to ensure it is functioning correctly.
  3. Check the ABS control module for any signs of malfunction and diagnose any potential issues.
  4. Replace the brake switch if it is found to be faulty and repair any damaged wiring or connectors.
  5. Clear the DTC with a scan tool and test drive the vehicle to ensure the ABS system is operating properly.

Cost to Fix C0161 2017 GMC Sierra

The typical repair costs for addressing the C0161 code on a 2017 GMC Sierra can range from $150 to $400, including parts and labor. However, it's important to note that actual costs may vary based on the specific diagnosis, parts required, and labor rates at auto repair shops. It's recommended to consult with a qualified mechanic or dealership for an accurate estimate based on your vehicle's needs and location.

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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 C0161 2017 GMC Sierra Code

1. What does OBDII code C0161 for a 2017 GMC Sierra mean?

Code C0161 indicates an issue with the Antilock Braking System (ABS) Brake Switch Circuit in your vehicle.

2. What are the common symptoms of OBDII code C0161 in a GMC Sierra?

Common symptoms include the ABS warning light being illuminated on the dashboard, potential loss of ABS functionality, and difficulty engaging the brakes.

3. What are the possible causes of OBDII code C0161 in a 2017 GMC Sierra?

Potential causes of code C0161 include a faulty brake switch, damaged wiring or connectors in the brake switch circuit, or issues with the ABS control module.

4. How can I diagnose the cause of OBDII code C0161 in my GMC Sierra?

Diagnosing the issue may involve checking the brake switch for proper operation, inspecting the wiring and connectors for damage, and using a diagnostic tool to scan the ABS system for specific faults.

5. Can I still drive my GMC Sierra with OBDII code C0161 present?

It is not recommended to drive your vehicle with an active ABS-related fault code like C0161, as it may affect the proper functioning of the Antilock Braking System and compromise braking performance.

6. How can I repair OBDII code C0161 in my 2017 GMC Sierra?

Repairing code C0161 may involve replacing a faulty brake switch, repairing damaged wiring or connectors, or addressing any underlying issues with the ABS control module.

7. Is it safe to reset the OBDII code C0161 in my GMC Sierra using a scanner?

While clearing the fault code may temporarily turn off the warning light, it is crucial to address the root cause of the issue to prevent it from reoccurring and ensure the proper functioning of the ABS system.

8. Can a DIY enthusiast fix OBDII code C0161 in a GMC Sierra?

Depending on your skill level and access to tools, some aspects of diagnosing and repairing code C0161 may be manageable for a DIY enthusiast, especially if the issue is related to the brake switch or wiring.

9. How much does it cost to repair OBDII code C0161 in a 2017 GMC Sierra at a dealership or repair shop?

The cost of repairing code C0161 can vary based on the specific cause of the issue, but it may involve diagnostic fees, parts costs for replacement components, and labor charges for the repair work.

10. How often does OBDII code C0161 occur in a 2017 GMC Sierra?

The occurrence of code C0161 can vary from vehicle to vehicle, but it is a relatively common ABS-related fault code that may be encountered in a 2017 GMC Sierra due to issues with the brake switch circuit.

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