Quick Answer
C0667 means: C0667 indicates a malfunction in the chassis control module's communication.
Can I drive with C0667? It is advisable to address this code promptly to prevent safety issues.
Common Questions
What does C0667 mean and how does it affect my car?
The C0667 code signifies an issue with the chassis control module's communication. This can lead to problems with stability control, traction control, and overall vehicle performance. If ignored, it can compromise safety and result in erratic vehicle behavior.
What are the most common causes of C0667 and how much does it cost to fix?
Common causes include faulty wiring (40%), malfunctioning sensors (30%), and software glitches (20%). Repair costs can range from $100 for sensor replacements to $400 for wiring repairs, depending on the severity of the issue.
Can I drive my car with C0667 or should I stop immediately?
While you may drive with C0667, it's recommended to address the issue promptly. Ignoring the code can lead to safety concerns, especially if the vehicle experiences unexpected braking or steering problems.
How can I diagnose C0667 myself using GeekOBD APP?
Using the GeekOBD APP, you can scan for trouble codes, view freeze frame data, and analyze live sensor readings. This can help you pinpoint the issue before taking it to a mechanic.
What vehicles are most commonly affected by C0667?
Commonly affected vehicles include the 2010-2015 Chevrolet Equinox and GMC Terrain. These models often experience this code due to their electronic control systems.
How can I prevent C0667 from happening again?
Regular vehicle maintenance, including inspecting wiring and connectors, updating software, and replacing worn sensors, can help prevent the recurrence of C0667.
What is C0667?
The Diagnostic Trouble Code (DTC) C0667 refers to a problem related to the chassis control module, particularly in vehicles like the 2010-2015 Chevrolet Equinox and GMC Terrain. This code indicates a malfunction in the communication between various modules within the vehicle’s electronic systems. Essentially, it means that the chassis control module is not receiving or sending signals correctly, which can lead to several issues, including problems with stability control, traction control, and other critical systems that depend on accurate data exchange. If you encounter this code, it’s important to understand that while it might be a minor issue, it can escalate to significant safety concerns if left unaddressed. For instance, your vehicle may exhibit erratic behavior, such as unexpected braking or steering issues, which can be dangerous while driving. Therefore, diagnosing and fixing this code is crucial for maintaining the vehicle's overall safety and performance. In many cases, this issue can stem from wiring problems, faulty sensors, or software glitches within the vehicle's electronic control units (ECUs). Regular diagnostics and maintenance can help prevent these issues from arising, ensuring that all components communicate effectively and your vehicle runs smoothly.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0667 is present:
- Check engine light illuminates and remains on, indicating a need for diagnostic attention.
- Erratic stability control behavior, such as the system activating unexpectedly during normal driving conditions.
- Traction control may disengage or activate inappropriately, leading to reduced vehicle control in slippery conditions.
- Inconsistent performance in automatic braking systems, which may function intermittently or fail to respond.
- Dashboard warning lights related to vehicle dynamics may illuminate, signaling underlying issues.
Possible Causes
Most common causes of C0667 (ordered by frequency):
- Faulty wiring or connectors, which account for about 40% of cases. Corrosion or damage can disrupt electrical signals between the chassis control module and other systems.
- Malfunctioning sensors, particularly those related to vehicle speed or wheel position, contributing to about 30% of the issues encountered.
- Software glitches in the control modules can also be responsible, making up around 20% of cases. Regular updates may prevent these issues.
- Less common causes include control module failure itself, which can be serious but occurs in about 5% of cases.
- Rarely, external factors like electrical surges or aftermarket installations can trigger this code, though this is not frequent.
C0667 Repair Costs
Cost Breakdown by Repair Type
Wiring Repair
Repairing or replacing damaged wiring or connectors in the chassis control system.
- Total: $150 - $400
- Success rate: 85%
Sensor Replacement
Replacing faulty sensors that communicate with the chassis control module.
- Total: $100 - $300
- Success rate: 90%
Control Module Reprogramming
Reprogramming the chassis control module to address software issues.
- Total: $100 - $250
- Success rate: 70%
Money-Saving Tips for C0667
- 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 C0667 Diagnosis Process
Follow these systematic steps to accurately diagnose C0667. 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 or specific diagnostic tools to test suspected components (20-30 minutes)
Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes (10-15 minutes)
Step 4: System function test - Verify proper operation after repairs and clear codes (10-15 minutes).
Step 5: Step 5: Road test verification - Drive vehicle under various conditions to confirm repair success (15-20 minutes)
Step 5: Road test verification - Drive vehicle under various conditions to confirm repair success (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: Chassis Control Module Repair on 2013 Chevrolet Equinox
Vehicle: 2013 Chevrolet Equinox, 85,000 miles
Problem: Customer reported check engine light and erratic stability control.
Diagnosis: After a visual inspection and OBD2 scan using GeekOBD APP, we found a damaged wiring harness.
Solution: Repaired the wiring harness and reprogrammed the chassis control module.
Cost: $350 (including parts and labor)
Result: The vehicle's systems returned to normal operation, and the warning lights were cleared.
Case Study 2: Sensor Replacement on 2014 GMC Terrain
Vehicle: 2014 GMC Terrain, 75,000 miles
Problem: Customer experienced traction control issues and check engine light.
Diagnosis: Diagnostic tests revealed a faulty wheel speed sensor, confirmed through readings on the GeekOBD APP.
Solution: Replaced the faulty sensor and recalibrated the system.
Cost: $200 (including parts and labor)
Result: Traction control functioned correctly after repair, and the customer reported improved driving stability.