C0081 - Understanding DTC C0081: Common Issues in 2013-2017 Chevrolet Silverado and GMC Sierra

Quick Answer

C0081 means: DTC C0081 indicates a malfunction in the left front wheel speed sensor circuit, affecting ABS performance.

Fix: Check and replace faulty components Cost: $100 - $300 Time: 90-180 minutes

Can I drive with C0081? Immediate attention is recommended to ensure safe driving conditions.

Common Questions

What does C0081 mean and how does it affect my car?

DTC C0081 indicates a malfunction in the left front wheel speed sensor circuit, which is vital for your vehicle's anti-lock braking system. When this code is present, it can lead to issues with braking performance, especially in slippery conditions. You may notice the ABS light on your dashboard, and your vehicle might not perform as expected during emergency braking situations, making it crucial to resolve this issue promptly.

What are the most common causes of C0081 and how much does it cost to fix?

The primary cause of C0081 is typically a faulty left front wheel speed sensor, which can cost between $100 to $300 to replace. Other causes may include damaged wiring or connectors, which could range from $50 to $150 to repair. In rare cases, you might need to replace the ABS control module, which could cost $400 to $800.

Can I drive my car with C0081 or should I stop immediately?

While you can technically drive with the C0081 code, it's not recommended. Ignoring this issue can lead to compromised braking performance, increasing the risk of accidents. It's best to have the vehicle inspected and repaired as soon as possible.

How can I diagnose C0081 myself using GeekOBD APP?

To diagnose C0081 with the GeekOBD APP, start by connecting the app to your vehicle's OBD2 port. Retrieve the trouble codes and freeze frame data. Focus on the C0081 code and check for any related codes that might provide additional context. Conduct a visual inspection of the left front wheel sensor and wiring, and use the app to monitor sensor performance while driving.

What vehicles are most commonly affected by C0081?

Commonly affected vehicles include the 2013-2017 Chevrolet Silverado, GMC Sierra, and various models under the GM umbrella. It's advisable to check for any related recalls or technical service bulletins (TSBs) that may address this specific issue.

How can I prevent C0081 from happening again?

To prevent C0081, regularly inspect your vehicle's wheel speed sensors, wiring, and connectors for any signs of wear or damage. Keeping your vehicle clean and free from road debris can also help minimize potential issues, along with following the recommended maintenance schedule.

What is C0081?

DTC C0081 is a diagnostic trouble code that indicates a problem with the wheel speed sensor circuit. Specifically, it refers to a malfunction in the left front wheel speed sensor circuit. This code is commonly found in vehicles such as the 2013-2017 Chevrolet Silverado and the GMC Sierra. When the vehicle's onboard diagnostics detect an unexpected signal from the left front wheel speed sensor, it triggers this code. The wheel speed sensor is critical for the vehicle's anti-lock braking system (ABS) to function correctly, which ensures the vehicle maintains control during braking. If this code is present, drivers may experience issues such as the ABS warning light illuminating on the dashboard, potential loss of ABS functionality, and compromised vehicle stability during braking. Ignoring this code can lead to more severe braking issues, especially in adverse weather conditions, making it essential to address the problem promptly. Regularly checking your vehicle’s OBD2 system can help catch issues like C0081 early on, ensuring safe driving conditions.

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

Symptoms

Common symptoms when C0081 is present:

  • The ABS warning light illuminates on the dashboard, indicating potential braking system issues.
  • Drivers may notice a loss of traction control during wet or slippery conditions.
  • The vehicle may experience erratic braking behavior, especially when trying to stop suddenly.
  • In some instances, the brake pedal may feel softer or spongy than usual due to sensor malfunction.
  • Increased stopping distances might occur, leading to safety concerns while driving.

Possible Causes

Most common causes of C0081 (ordered by frequency):

  1. The most common cause of DTC C0081 is a faulty left front wheel speed sensor, with a likelihood of about 60%. This sensor may fail due to wear and tear or physical damage from road debris.
  2. Another common cause is damaged wiring or poor connections within the wheel speed sensor circuit. This issue can lead to intermittent sensor readings, which affect vehicle performance.
  3. Corrosion at the sensor connector can also lead to faults, so it's essential to inspect the electrical connectors regularly to prevent this.
  4. Less commonly, a malfunctioning ABS control module may trigger this code, but this is a more complex issue that requires professional diagnostics.
  5. Rarely, software issues in the vehicle’s computer system can lead to false codes, requiring a reset or update of the ECU.

C0081 Repair Costs

Cost Breakdown by Repair Type

Wheel Speed Sensor Replacement

Replacing the faulty left front wheel speed sensor to restore ABS functionality.

  • Total: $100 - $300
  • Success rate: 90%
Wiring Repair

Repairing or replacing damaged wiring or connectors associated with the wheel speed sensor.

  • Total: $50 - $150
  • Success rate: 85%
ABS Control Module Replacement

In cases of module failure, replacing the ABS control module may be necessary.

  • Total: $400 - $800
  • Success rate: 70%
Money-Saving Tips for C0081
  • 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 C0081 Diagnosis Process

Follow these systematic steps to accurately diagnose C0081. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Start with an initial visual inspection to check for any obvious signs like damaged wiring, loose connections, or corrosion around the wheel speed sensor (5-10 minutes)

Step 1: Start with an initial visual inspection to check for any obvious signs like damaged wiring, loose connections, or corrosion around the wheel speed sensor (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: Use an OBD2 scanner, like the GeekOBD APP, to retrieve all trouble codes and freeze frame data to understand the fault context (10-15 minutes)

Step 2: Use an OBD2 scanner, like the GeekOBD APP, to retrieve all trouble 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: Conduct component testing with a multimeter or specific diagnostic tools to test the left front wheel speed sensor and wiring (20-30 minutes)

Step 3: Conduct component testing with a multimeter or specific diagnostic tools to test the left front wheel speed sensor and wiring (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: Perform a system function test to verify proper operation after repairs and clear any codes (10-15 minutes)

Step 4: Perform a system function test to verify proper operation after repairs and clear any 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: Complete a road test under various driving conditions to confirm the success of the repair (15-20 minutes)

Step 5: Complete a road test under various driving conditions to confirm the success of the repair (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: 2015 Chevrolet Silverado C0081 Repair Case

Vehicle: 2015 Chevrolet Silverado, 75,000 miles

Problem: Customer reported an ABS warning light and unusual braking behavior.

Diagnosis: Diagnosis revealed a faulty left front wheel speed sensor, confirmed through visual inspection and multimeter testing.

Solution: Replaced the left front wheel speed sensor and cleared the code. Conducted a road test to ensure proper function.

Cost: $150 (sensor replacement and labor)

Result: The ABS warning light was resolved, and the vehicle's braking performance returned to normal.

Case Study 2: 2016 GMC Sierra C0081 Troubleshooting

Vehicle: 2016 GMC Sierra, 50,000 miles

Problem: Customer experienced intermittent ABS light and reduced traction control.

Diagnosis: Found damaged wiring in the sensor circuit, causing erratic sensor readings.

Solution: Repaired the wiring harness and connections, then performed a system function test.

Cost: $100 (wiring repair and diagnostics)

Result: The ABS system functioned properly after repairs, and the customer reported improved stability.

Diagnose C0081

Use GeekOBD APP for professional diagnosis!

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  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: C0081
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes