C0118 - ABS Wheel Speed Sensor Malfunction in Vehicles Like Chevrolet and GMC

Quick Answer

C0118 means: C0118 indicates a malfunction in the ABS wheel speed sensor, affecting braking performance.

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

Can I drive with C0118? Immediate attention is recommended to ensure safe driving conditions.

Common Questions

What does C0118 mean and how does it affect my car?

C0118 indicates a malfunction in the ABS wheel speed sensor, which is crucial for maintaining proper braking performance. If this issue is not addressed, it could lead to decreased braking efficiency and increased risk of accidents, especially in adverse weather conditions.

What are the most common causes of C0118 and how much does it cost to fix?

The most common cause of C0118 is a faulty ABS wheel speed sensor, which typically ranges from $100 to $300 for replacement. Damaged wiring and connectors can also be an issue, costing between $50 and $200 to repair. In some cases, the ABS control module may need replacement, which could run between $300 and $800.

Can I drive my car with C0118 or should I stop immediately?

While it may be possible to drive a short distance with C0118, it is not safe to do so. The malfunctioning ABS can lead to compromised braking performance, especially under hard braking conditions or in wet weather. It is advisable to seek repair as soon as possible.

How can I diagnose C0118 myself using GeekOBD APP?

To diagnose C0118, connect the GeekOBD APP to your vehicle's OBD2 port. Use the app to retrieve diagnostic trouble codes and review freeze frame data. Check for any additional codes that may provide context and take note of the ABS warning light status for reference.

What vehicles are most commonly affected by C0118?

DTC C0118 is commonly found in vehicles like the 2010-2015 Chevrolet Silverado and the 2013-2017 GMC Sierra, among others. If you're experiencing this code in these models, it's essential to address it promptly due to the critical nature of the ABS system.

How can I prevent C0118 from happening again?

To prevent C0118, ensure regular maintenance and inspections of your vehicle's braking system. Avoid driving over rough terrain that could damage the ABS components. Keeping your vehicle's electrical connections clean and free from corrosion can also help maintain system integrity.

What is C0118?

DTC C0118 refers to a malfunction in the Anti-lock Braking System (ABS) wheel speed sensor. This code indicates that the vehicle's onboard diagnostic system has detected an issue with the sensor that monitors the speed of one or more wheels. When the ABS wheel speed sensor fails or sends incorrect data, it can lead to compromised braking performance. Commonly found in vehicles like the 2010-2015 Chevrolet Silverado and the 2013-2017 GMC Sierra, this code can trigger the ABS warning light on the dashboard. If left unresolved, it may not only affect the vehicle’s braking efficiency but also lead to more severe issues such as loss of traction control and potential safety hazards during slippery conditions. Understanding the DTC can help car owners take quicker action to address the issue, ensuring the safety and reliability of their vehicle. When experiencing this code, it's advisable to consult a professional technician or use an OBD2 scanner like the GeekOBD APP to diagnose the problem accurately before attempting repairs.

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

Symptoms

Common symptoms when C0118 is present:

  • The ABS warning light illuminates on the dashboard, indicating a fault in the braking system.
  • You may experience a pulsating brake pedal during braking, which can feel unusual and alarming.
  • There may be a noticeable decrease in traction control functionality, especially in wet or slippery conditions.
  • The vehicle might experience erratic braking behavior, where the brakes engage unexpectedly or feel less responsive.
  • In some cases, the check engine light might also appear alongside the ABS light, hinting at further underlying issues.

Possible Causes

Most common causes of C0118 (ordered by frequency):

  1. The most common cause of the C0118 code is a faulty ABS wheel speed sensor, with a likelihood of around 60%. This can be due to wear, damage, or exposure to road debris.
  2. Another potential cause is damaged wiring or connectors associated with the ABS sensor, which can occur from corrosion or physical damage, accounting for approximately 20% of cases.
  3. Poor maintenance practices, such as neglecting regular inspections of brake components, can lead to issues that trigger this code, making it essential to follow the vehicle's maintenance schedule.
  4. Less commonly, the ABS control module itself may be malfunctioning, which could be more expensive to repair and account for about 10% of cases.
  5. While rare, software glitches in the vehicle's computer system may also trigger this code, typically requiring a software update or reset.

C0118 Repair Costs

Cost Breakdown by Repair Type

ABS Wheel Speed Sensor Replacement

Replacing the ABS wheel speed sensor is the most common repair for C0118. This typically involves removing the old sensor and installing a new one.

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

Repairing or replacing damaged wiring and connectors related to the ABS sensor can resolve the issue if the sensor is functioning correctly.

  • Total: $50 - $200
  • Success rate: 80%
ABS Control Module Replacement

If the ABS control module is faulty, replacing it can be necessary, but this is usually a last resort.

  • Total: $300 - $800
  • Success rate: 75%
Money-Saving Tips for C0118
  • 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 C0118 Diagnosis Process

Follow these systematic steps to accurately diagnose C0118. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Start with a visual inspection of the ABS sensor and surrounding wiring for any signs of damage or corrosion (5-10 minutes)

Step 1: Start with a visual inspection of the ABS sensor and surrounding wiring for any signs of damage or corrosion (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: Utilize an OBD2 scanner, like the GeekOBD APP, to read the C0118 code and any additional codes that may provide context (10-15 minutes)

Step 2: Utilize an OBD2 scanner, like the GeekOBD APP, to read the C0118 code and any additional codes that may provide 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: Test the ABS wheel speed sensor using a multimeter or oscilloscope to check for proper voltage and signal output (20-30 minutes)

Step 3: Test the ABS wheel speed sensor using a multimeter or oscilloscope to check for proper voltage and signal output (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: After repairs, conduct a system function test to ensure the ABS is functioning correctly and clear any stored codes (10-15 minutes)

Step 4: After repairs, conduct a system function test to ensure the ABS is functioning correctly and clear any stored 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: Perform a road test to confirm the success of the repairs and monitor the ABS system under various driving conditions (15-20 minutes)

Step 5: Perform a road test to confirm the success of the repairs and monitor the ABS system under various driving conditions (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: Chevrolet Silverado ABS Sensor Replacement

Vehicle: 2014 Chevrolet Silverado 1500, 75,000 miles

Problem: Customer reported the ABS light was on, and they experienced unusual braking behavior, especially on wet roads.

Diagnosis: The technician used the GeekOBD APP to confirm the C0118 code and performed a visual inspection, revealing a damaged ABS wheel speed sensor.

Solution: The ABS wheel speed sensor was replaced, and the vehicle was tested to ensure the ABS light was no longer illuminated.

Cost: $180 (sensor cost: $120, labor: $60)

Result: The repair was successful, and the customer reported improved braking performance.

Case Study 2: GMC Sierra Wiring Repair

Vehicle: 2015 GMC Sierra 2500HD, 50,000 miles

Problem: The ABS warning light was on, and the vehicle experienced intermittent brake issues.

Diagnosis: Using the GeekOBD APP, the technician identified C0118 and found damaged wiring leading to the ABS sensor.

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

Cost: $120 (wiring repair cost)

Result: After the repair, the ABS light was cleared, and the vehicle functioned normally without any further ABS issues.

Diagnose C0118

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: C0118
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes