Quick Answer
C0108 means: C0108 indicates a malfunction in the left front wheel speed sensor circuit.
Can I drive with C0108? Immediate attention is recommended to avoid safety risks.
Common Questions
What does C0108 mean and how does it affect my car?
C0108 indicates a problem with the left front wheel speed sensor circuit. If this code appears, it typically means that your ABS and traction control systems may not function properly, which can compromise your safety while driving. You might notice warning lights on the dashboard or experience inconsistent braking performance.
What are the most common causes of C0108 and how much does it cost to fix?
The most common causes of C0108 include a faulty wheel speed sensor, which can range from $100 to $300 to fix, and damaged wiring, which may cost between $50 and $150 to repair. It's important to get a proper diagnosis to ensure the right repairs are made.
Can I drive my car with C0108 or should I stop immediately?
While you might be able to drive your vehicle, it is not recommended to ignore the C0108 code. Driving with a malfunctioning ABS can increase the risk of losing control, especially in slippery conditions. It's best to address the issue as soon as possible.
How can I diagnose C0108 myself using GeekOBD APP?
To diagnose C0108 with the GeekOBD APP, start by connecting the app to your car's OBD2 port. Once connected, retrieve the diagnostic trouble codes and check for C0108. Review the freeze frame data to understand the conditions when the code was triggered, and proceed with a visual inspection of the wheel speed sensor and wiring.
What vehicles are most commonly affected by C0108?
C0108 is frequently found in Chevrolet Silverado and GMC Sierra models from 2005 to 2015. These trucks are known to have issues with their wheel speed sensors, particularly in older vehicles with higher mileage.
How can I prevent C0108 from happening again?
To prevent C0108 from recurring, regularly inspect your vehicle's braking system and wiring for signs of wear or corrosion. Keeping the wheel speed sensors clean and ensuring proper installation during any repairs can also help avoid future issues.
What is C0108?
The DTC C0108 code indicates a problem with the wheel speed sensor circuit, specifically related to the front left wheel speed sensor. This code is particularly common in Chevrolet and GMC trucks manufactured between 2005 and 2015. When the vehicle's onboard diagnostic system detects a malfunction in the sensor circuit or if the sensor fails to provide accurate speed readings, it triggers the C0108 code. This can lead to issues with the anti-lock braking system (ABS) and traction control, which are critical for maintaining vehicle stability, especially during adverse weather conditions. Drivers may notice symptoms such as the ABS warning light illuminating on the dashboard, potential brake performance issues, and erratic behavior in traction control. Ignoring this code could lead to further damage to the braking system and may compromise safety. Therefore, understanding the implications of C0108 is essential for vehicle owners to ensure their safety and the longevity of their vehicle.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0108 is present:
- The ABS warning light remains illuminated on the dashboard, indicating a problem with the anti-lock braking system.
- Drivers may experience inconsistent braking performance, leading to a feeling of instability during emergency stops.
- There may be a noticeable reduction in traction control functionality, especially in wet or slippery conditions.
- The brake pedal may feel different, possibly becoming softer or harder than normal, affecting responsiveness.
- In some cases, the vehicle may experience a decrease in fuel efficiency due to issues with the engine management system.
Possible Causes
Most common causes of C0108 (ordered by frequency):
- The most common cause is a faulty wheel speed sensor, accounting for about 60% of cases. This can be due to wear and tear, especially in older vehicles.
- Corrosion or damaged wiring in the sensor circuit is another common cause, often leading to a poor connection or short circuit.
- A malfunctioning ABS module can also trigger the C0108 code, which might require more extensive diagnostics and repair.
- Less common but serious causes include issues with the vehicle's ECM (engine control module), which might misinterpret sensor signals.
- A rare cause could be an issue with the vehicle's brake system, such as air in the brake lines affecting sensor readings.
C0108 Repair Costs
Cost Breakdown by Repair Type
Wheel Speed Sensor Replacement
Replacing the faulty wheel speed sensor with a new one.
- Total: $100 - $300
- Success rate: 90%
Wiring Repair
Repairing or replacing damaged wiring in the sensor circuit.
- Total: $50 - $150
- Success rate: 80%
Money-Saving Tips for C0108
- 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 C0108 Diagnosis Process
Follow these systematic steps to accurately diagnose C0108. 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 (5-10 minutes)
Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes).
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).
Step 3: Step 3: Component testing - Use a multimeter to test the wheel speed sensor for proper voltage and resistance (20-30 minutes)
Step 3: Component testing - Use a multimeter to test the wheel speed sensor for proper voltage and resistance (20-30 minutes).
Step 4: Step 4: Inspect wiring and connectors - Look for any signs of wear, corrosion, or disconnection in the wiring harness (15-20 minutes)
Step 4: Inspect wiring and connectors - Look for any signs of wear, corrosion, or disconnection in the wiring harness (15-20 minutes).
Step 5: Step 5: System function test - Verify proper operation after repairs and clear codes to see if they return (10-15 minutes)
Step 5: System function test - Verify proper operation after repairs and clear codes to see if they return (10-15 minutes).
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 1500 C0108 Repair
Vehicle: 2010 Chevrolet Silverado 1500, 85,000 miles
Problem: Customer reported ABS warning light illuminated and inconsistent braking performance.
Diagnosis: Diagnostic scan revealed C0108 code. Visual inspection showed a damaged left wheel speed sensor wiring.
Solution: Replaced the left front wheel speed sensor and repaired the damaged wiring.
Cost: $250 for parts and labor
Result: Customer reported no more warning lights and improved braking performance.
Case Study 2: GMC Sierra 2500 C0108 Resolution
Vehicle: 2015 GMC Sierra 2500, 60,000 miles
Problem: Driver experienced traction control issues and ABS warning light.
Diagnosis: Scanned for codes and confirmed C0108. Found corrosion in the wheel speed sensor connector.
Solution: Cleaned the connector and replaced the wheel speed sensor.
Cost: $180 total for repair
Result: Post-repair testing confirmed proper ABS function and no reoccurrence of the code.