C0161 GMC Code - Antilock Braking System Brake Switch Circuit
Quick Answer
When the brake pedal is applied, the Body Control Module (BCM) sends a serial data message to the Electronic Brake Control Module (EBCM) in reference to the brake pedal positions. Common causes include Faulty Brake Switch (Stop Lamp Switch), Brake Switch harness is open or shorted, Brake Switch 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
- C0161 GMC indicates Antilock Braking System Brake Switch Circuit.
- Common causes
- Common causes include Faulty Brake Switch (Stop Lamp Switch), Brake Switch harness is open or shorted, Brake Switch 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.
Code C0161 GMC Description
What are the Possible Causes of the DTC C0161 GMC?
- Faulty Brake Switch (Stop Lamp Switch)
- Brake Switch harness is open or shorted
- Brake Switch circuit poor electrical connection
- Faulty Electronic Brake Control Module (EBCM) with Brake Pressure Modulator Valve (BPMV)
How to Fix the DTC C0161 GMC?
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 C0161 GMC 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.
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Information for Specific GMC Models
- C0161 2014 GMC Sierra — Antilock Braking System Brake Switch Circuit
- C0161 2015 GMC Sierra — Antilock Braking System Brake Switch Circuit
- C0161 2016 GMC Sierra — Antilock Braking System Brake Switch Circuit
- C0161 2017 GMC Sierra — Antilock Braking System Brake Switch Circuit
- C0161 2018 GMC Sierra — Antilock Braking System Brake Switch Circuit
Frequently Asked Questions about C0161 GMC Code
1. What are the common symptoms of OBDII code C0161 GMC related to the Antilock Braking System Brake Switch Circuit?
- Common symptoms include the ABS warning light being illuminated on the dashboard, potential loss of ABS functionality, and possible issues with the brake lights.
2. What are the possible causes of OBDII code C0161 GMC?
- The code can be triggered by a faulty brake switch, damaged wiring in the brake switch circuit, or a malfunctioning ABS module.
3. How can I diagnose the cause of OBDII code C0161 GMC?
- Diagnosing the issue typically involves checking the brake switch for proper operation, inspecting the wiring for any damage or shorts, and using a diagnostic scanner to read the ABS module for specific fault codes.
4. Can I still drive my vehicle with OBDII code C0161 GMC active?
- It is generally not recommended to drive with the code active, as it can affect the proper operation of the ABS system and compromise braking performance.
5. How can I repair OBDII code C0161 GMC related to the Antilock Braking System Brake Switch Circuit?
- Repairing the issue may involve replacing the faulty brake switch, repairing damaged wiring, or addressing any issues with the ABS module as indicated by further diagnostics.
6. Are there any simple troubleshooting steps I can take before seeking professional help for OBDII code C0161 GMC?
- You can start by checking the brake lights to see if they are functioning properly, inspecting the brake switch for any visible damage, and ensuring the brake fluid level is adequate.
7. Is OBDII code C0161 GMC a serious issue that requires immediate attention?
- While the severity may vary depending on the exact cause, it is generally recommended to address the issue promptly to ensure the ABS system functions correctly and maintain overall safety while driving.
8. Can a DIY enthusiast with basic automotive knowledge repair OBDII code C0161 GMC?
- Depending on the specific cause, a DIY enthusiast may be able to address the issue by replacing the brake switch or repairing wiring, but further diagnostics and repairs may require professional assistance.
9. How long does it typically take to repair OBDII code C0161 GMC?
- The repair time can vary based on the exact cause and complexity of the issue, but resolving the code may take anywhere from a few hours to a day, depending on the required repairs and diagnostics.
10. Will resetting the OBDII system clear OBDII code C0161 GMC related to the Antilock Braking System Brake Switch Circuit?
- Resetting the OBDII system may temporarily clear the code, but it will likely reappear if the underlying issue with the brake switch circuit is not addressed and repaired.
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