C0161 - Common Issues in 2015-2018 Chevrolet Silverado and GMC Sierra

Quick Answer

C0161 means: C0161 indicates a fault related to the Anti-lock Brake System (ABS) control module.

Fix: Check and replace faulty components Cost: $800 - $1200 Time: 90-180 minutes

Can I drive with C0161? You should address this issue immediately to ensure your braking system functions properly.

Common Questions

What does C0161 mean and how does it affect my car?

The C0161 code indicates an issue with your vehicle's Anti-lock Brake System (ABS). This can affect your car's braking performance, particularly in emergency situations, making it crucial to address this code quickly to ensure safe operation.

What are the most common causes of C0161 and how much does it cost to fix?

The most common causes of C0161 include a faulty ABS control module, damaged wiring, or malfunctioning wheel speed sensors. Repair costs can range from $100 for wiring repairs to over $1,000 for module replacement.

Can I drive my car with C0161 or should I stop immediately?

While you may be able to drive with a C0161 code, it is not advisable. The ABS may not function properly, which could compromise your safety, especially in emergency braking situations. It's best to have the issue diagnosed and repaired as soon as possible.

How can I diagnose C0161 myself using GeekOBD APP?

You can use the GeekOBD APP to scan for DTCs, view live data, and check freeze frame information. Begin by connecting the app to your vehicle's OBD2 port to retrieve the C0161 code and further diagnose the issue through the app's detailed insights.

What vehicles are most commonly affected by C0161?

C0161 is commonly found in vehicles like the 2015-2018 Chevrolet Silverado and GMC Sierra, among others. It's essential to check for any specific recalls or Technical Service Bulletins (TSBs) related to your vehicle model.

How can I prevent C0161 from happening again?

To prevent C0161 from recurring, conduct regular inspections of your ABS system, maintain clean and secure electrical connections, and ensure timely software updates for your vehicle's systems.

What is C0161?

The DTC C0161 code is a diagnostic trouble code related to the Anti-lock Brake System (ABS) of your vehicle. Specifically, it indicates a fault in the ABS control module or its communication with other systems. When this code appears, it typically means that the ABS control module is not receiving the correct signals or that there's an internal fault in the module itself. This can manifest in various ways, including problems with braking performance and the illumination of the ABS warning light on the dashboard. If you own a 2015-2018 Chevrolet Silverado or GMC Sierra, you may notice that the brake pedal feels different or that the ABS does not engage properly during hard braking. Ignoring this code can lead to decreased vehicle safety, especially in slippery conditions, as the ABS system is crucial for preventing wheel lockup during emergency braking situations. It's essential to address the C0161 code promptly to ensure optimal braking performance and safety.

System: C - Chassis (ABS, Steering, Suspension)

Symptoms

Common symptoms when C0161 is present:

  • The ABS warning light remains illuminated on the dashboard, indicating a potential issue with the anti-lock brake system.
  • You may notice a change in brake pedal feel, such as it being spongy or requiring more force to engage.
  • During hard braking, the ABS may not activate as expected, which can lead to wheel lockup and loss of control.
  • In some cases, you might experience reduced braking efficiency, especially in wet or slippery conditions.
  • You may hear unusual noises from the ABS module or related components during braking.

Possible Causes

Most common causes of C0161 (ordered by frequency):

  1. The most common cause of the C0161 code is a faulty ABS control module, with an estimated likelihood of about 60%. Issues can arise from internal circuit failures or software malfunctions.
  2. Another potential cause could be damaged wiring or connectors related to the ABS system, which could account for around 25% of cases. Corrosion or frayed wires can disrupt communication.
  3. A third possibility is a malfunctioning wheel speed sensor, which can misreport vehicle speed and lead to erroneous ABS operation. Preventive maintenance, such as regular inspections, can help catch issues early.
  4. Less commonly, a failed module relay can prevent the ABS control module from receiving power, which is a serious issue that requires immediate attention.
  5. In rare cases, software glitches in newer vehicles may cause erroneous readings that lead to the C0161 code appearing. This can often be resolved through a software update.

C0161 Repair Costs

Cost Breakdown by Repair Type

ABS Control Module Replacement

Replacing a faulty ABS control module that triggers the C0161 code.

  • Total: $800 - $1200
  • Success rate: 85%
Wiring Repair or Replacement

Repairing or replacing damaged wiring or connectors associated with the ABS system.

  • Total: $100 - $400
  • Success rate: 75%
Money-Saving Tips for C0161
  • Start with the most common and least expensive repairs first
  • Use GeekOBD APP to confirm diagnosis before replacing expensive parts
  • Consider preventive maintenance to avoid future occurrences
  • Compare prices for OEM vs aftermarket parts based on your needs
  • Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional C0161 Diagnosis Process

Follow these systematic steps to accurately diagnose C0161. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion in the ABS system components (5-10 minutes)

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion in the ABS system components (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the ABS control module and wiring integrity (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the ABS control module and wiring integrity (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: System function test - After making repairs, verify proper operation of the ABS by performing a system function test and clearing codes (10-15 minutes)

Step 4: System function test - After making repairs, verify proper operation of the ABS by performing a system function test and clearing codes (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm the repairs were successful and that the ABS operates correctly (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm the repairs were successful and that the ABS operates correctly (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

Important Notes

  • Always verify the repair with GeekOBD APP after completing diagnostic steps
  • Clear codes and test drive to ensure the problem is resolved
  • Address underlying causes to prevent code recurrence

Real Repair Case Studies

Case Study 1: ABS Control Module Replacement in a 2016 Chevrolet Silverado

Vehicle: 2016 Chevrolet Silverado 1500, 75,000 miles

Problem: The customer reported that the ABS warning light was on and the brakes felt inconsistent during hard stops.

Diagnosis: After scanning for DTCs, the C0161 code was confirmed. A visual inspection revealed a faulty ABS control module.

Solution: The ABS control module was replaced, and the system was recalibrated to ensure proper functionality.

Cost: $950 (parts: $750 for the module, $200 for labor)

Result: After the repair, the ABS warning light was off, and the brakes performed reliably.

Case Study 2: Wiring Repair in a 2017 GMC Sierra

Vehicle: 2017 GMC Sierra 1500, 50,000 miles

Problem: The driver experienced an ABS warning light and a soft brake pedal.

Diagnosis: Diagnostic testing revealed a C0161 code, and further inspection showed damaged wiring in the ABS harness.

Solution: The damaged wiring was repaired, and the connections were sealed to prevent future issues.

Cost: $300 (parts: $50 for wiring, $250 for labor)

Result: The ABS system was restored to full functionality, and the warning light did not reappear.

Diagnose C0161

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
Download GeekOBD APP Get MOBD Adapter

Code Information

Code: C0161
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes