Quick Answer
C0194 means: C0194 indicates a problem with the ABS hydraulic brake booster control circuit.
Can I drive with C0194? Immediate attention is recommended to ensure safe braking performance.
Common Questions
What does C0194 mean and how does it affect my car?
C0194 indicates a failure in the ABS hydraulic brake booster control circuit, which can lead to compromised braking performance. If left unresolved, it may result in longer stopping distances and potential safety hazards.
What are the most common causes of C0194 and how much does it cost to fix?
Common causes include damaged wiring, a faulty ABS control module, and a malfunctioning brake booster. Repair costs typically range from $100 to $800 depending on the issue and required parts.
Can I drive my car with C0194 or should I stop immediately?
It is not advisable to drive with the C0194 code present, as it indicates a serious braking issue. Immediate attention is recommended to ensure your safety and that of others on the road.
How can I diagnose C0194 myself using GeekOBD APP?
You can use the GeekOBD APP to scan for diagnostic trouble codes, review freeze-frame data for context, and check the status of the ABS system. This will help you identify potential issues before visiting a mechanic.
What vehicles are most commonly affected by C0194?
C0194 is frequently seen in 2015-2019 Chevrolet Silverado and other GM models, including GMC Sierra and Cadillac Escalade. Check for any recalls or Technical Service Bulletins (TSBs) related to ABS issues.
How can I prevent C0194 from happening again?
Regular maintenance checks of your vehicle's braking system, including wiring inspections and fluid levels, can help prevent the recurrence of C0194. Additionally, staying informed about recalls can also aid in prevention.
What is C0194?
The DTC code C0194 is a diagnostic trouble code that indicates a malfunction in the vehicle's Anti-lock Braking System (ABS). This code is particularly common in 2015-2019 Chevrolet Silverado and other GM models. When the C0194 code is triggered, it signifies that there is an issue with the hydraulic brake booster control circuit. This can occur due to a variety of reasons, such as faulty wiring, a malfunctioning ABS module, or a problem with the brake booster itself. In practical terms, the presence of this code often leads to the illumination of the ABS warning light on your dashboard. If ignored, it can result in compromised braking performance, which poses significant safety risks while driving. Therefore, understanding this code is crucial for maintaining vehicle safety and performance. If you notice this code, it is essential to address it promptly through diagnostics and repairs to prevent further issues down the line.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0194 is present:
- The ABS warning light remains illuminated on the dashboard, indicating a malfunction within the ABS system.
- Drivers may experience a soft or spongy brake pedal feel, which can result in longer stopping distances.
- In some cases, the vehicle may exhibit erratic braking behavior, such as the brakes engaging unexpectedly during normal driving conditions.
- There may be a noticeable decrease in overall braking efficiency, especially in emergency situations.
- Drivers might hear unusual noises from the ABS module, such as clicking or buzzing, when the vehicle is in motion.
Possible Causes
Most common causes of C0194 (ordered by frequency):
- The most common cause of the C0194 code is a damaged or corroded wiring harness related to the ABS system, with a likelihood of around 50%.
- Another frequent cause is a faulty ABS control module, which may fail due to internal short circuits or software issues.
- A malfunctioning brake booster can also trigger this code, often due to wear and tear or fluid leaks, so regular maintenance checks are crucial.
- Less common but serious causes include hydraulic system failures, which can lead to complete brake failure if not addressed promptly.
- Lastly, rare instances may involve manufacturer defects in specific models, so staying updated with service bulletins from GM is advisable.
C0194 Repair Costs
Cost Breakdown by Repair Type
Wiring Repair or Replacement
Repairing or replacing damaged wiring connected to the ABS system.
- Total: $100 - $300
- Success rate: 85%
ABS Control Module Replacement
Replacing a malfunctioning ABS control module.
- Total: $400 - $800
- Success rate: 90%
Brake Booster Repair
Repairing or replacing a faulty brake booster.
- Total: $150 - $600
- Success rate: 80%
Money-Saving Tips for C0194
- 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 C0194 Diagnosis Process
Follow these systematic steps to accurately diagnose C0194. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Conduct an initial visual inspection to check for damaged wiring, loose connections, or corrosion in related components (5-10 minutes)
Step 1: Conduct an initial visual inspection to check for damaged wiring, loose connections, or corrosion in related components (5-10 minutes).
Step 2: Step 2: Use the GeekOBD APP to perform an OBD2 scan, retrieving all codes and freeze-frame data for a complete understanding of the fault context (10-15 minutes)
Step 2: Use the GeekOBD APP to perform an OBD2 scan, retrieving all codes and freeze-frame data for a complete understanding of the fault context (10-15 minutes).
Step 3: Step 3: Conduct component testing, using a multimeter to check the voltage and resistance of the ABS control module and hydraulic circuits (20-30 minutes)
Step 3: Conduct component testing, using a multimeter to check the voltage and resistance of the ABS control module and hydraulic circuits (20-30 minutes).
Step 4: Step 4: Perform a system function test after repairs are made, ensuring all components are functioning correctly and clearing any stored codes (10-15 minutes)
Step 4: Perform a system function test after repairs are made, ensuring all components are functioning correctly and clearing any stored codes (10-15 minutes).
Step 5: Step 5: Execute a road test under various conditions to confirm that the ABS system is operating properly and that the C0194 code does not reappear (15-20 minutes)
Step 5: Execute a road test under various conditions to confirm that the ABS system is operating properly and that the C0194 code does not reappear (15-20 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: C0194 Repair on a 2017 Chevrolet Silverado 1500
Vehicle: 2017 Chevrolet Silverado 1500, 45,000 miles
Problem: Customer reported ABS warning light illuminated and spongy brake pedal.
Diagnosis: After conducting a scan with the GeekOBD APP, the C0194 code was identified. Visual inspection revealed corroded wiring connected to the ABS module.
Solution: Repaired the damaged wiring and replaced the connectors. Cleared the codes and performed a system function test.
Cost: $250 (including labor and parts)
Result: ABS warning light turned off and brake performance returned to normal after the repair.
Case Study 2: C0194 Code Resolved on a 2019 GMC Sierra 1500
Vehicle: 2019 GMC Sierra 1500, 30,000 miles
Problem: Customer complained of erratic braking behavior and ABS light on.
Diagnosis: Using the GeekOBD APP, the C0194 code was confirmed. Further diagnostics indicated a faulty ABS control module.
Solution: Replaced the ABS control module and recalibrated the system. Conducted a comprehensive road test.
Cost: $600 (including parts and labor)
Result: Vehicle returned to the customer with fully functional brakes and no warning lights.