Quick Answer
C0695 means: DTC C0695 signals a loss of communication with the Body Control Module in some Chevy and GMC models.
Can I drive with C0695? It is advisable to address this issue promptly to prevent further complications.
Common Questions
What does C0695 mean and how does it affect my car?
DTC C0695 indicates that your vehicle is unable to communicate with the Body Control Module, which controls essential electronic functions. This can lead to issues like malfunctioning lights or power windows, affecting your overall driving experience.
What are the most common causes of C0695 and how much does it cost to fix?
The major causes include damaged wiring (60% likelihood), faulty BCM (25%), and corrosion (10%). Repair costs can range from $150 for wiring repairs to $800 for BCM replacement.
Can I drive my car with C0695 or should I stop immediately?
While you may be able to drive, it is not advisable. Ignoring this code could lead to safety issues or more significant electrical problems, so it’s best to address it as soon as possible.
How can I diagnose C0695 myself using GeekOBD APP?
You can use the GeekOBD APP to scan for codes, retrieve freeze frame data, and monitor real-time parameters to help identify the source of the issue more effectively.
What vehicles are most commonly affected by C0695?
Models from Chevrolet and GMC, particularly those produced between 2015 and 2020, are most frequently affected by this code, often due to their reliance on electronic control modules.
How can I prevent C0695 from happening again?
Regular maintenance checks on your vehicle's electrical system, including inspecting connectors and terminals for corrosion, can help prevent future occurrences of this code.
What is C0695?
DTC C0695 refers to a diagnostic trouble code indicating a loss of communication with the Body Control Module (BCM). The BCM is crucial for managing various functions such as lighting, door locks, and other electronic features in your vehicle. When this code appears, it suggests that the engine control unit (ECU) is unable to communicate with the BCM effectively, which can lead to a range of issues including malfunctioning lights, inoperative power windows, and even problems with the vehicle's ignition system. Owners of vehicles from brands like Chevrolet and GMC, particularly models from 2015 to 2020, may encounter this issue. If left unaddressed, it can result in further electrical problems, increased repair costs, and potential safety hazards. Common indicators include warning lights on the dashboard and intermittent failures of electronic components. Understanding the implications of this code is essential for maintaining your vehicle's performance and safety. To resolve the issue, diagnostic tools, like the GeekOBD APP, can help pinpoint the problem more accurately and guide the repair process.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0695 is present:
- The check engine light remains illuminated on the dashboard, indicating a potential issue with the vehicle's electronic systems.
- Power windows may stop functioning intermittently, which can be frustrating and affect overall convenience.
- The vehicle may experience erratic lighting behavior, such as headlights flickering or dashboard lights not working.
- Some electronic features like keyless entry or remote start may become inoperative, indicating possible BCM issues.
- In more severe cases, the engine may hesitate to start or stall due to a failure in the BCM's communication with other systems.
Possible Causes
Most common causes of C0695 (ordered by frequency):
- The most common cause of DTC C0695 is damaged wiring or connectors related to the BCM, with a likelihood of about 60%. These issues can stem from wear and tear or exposure to moisture.
- A faulty Body Control Module itself is the second most common cause, accounting for around 25% of cases. This can be due to internal component failure or manufacturing defects.
- Corrosion on connectors and grounds is another contributing factor, with a likelihood of 10%. Regular vehicle maintenance can help prevent this issue by ensuring all electrical connections are clean and secure.
- Less commonly, a software glitch in the BCM could lead to communication failures, which might require a firmware update to resolve.
- In rare cases, an underlying issue such as a failing alternator could affect the BCM's performance, leading to electrical disturbances.
C0695 Repair Costs
Cost Breakdown by Repair Type
Wiring Repair or Replacement
Repairing or replacing damaged wiring or connectors related to the BCM.
- Total: $150 - $500
- Success rate: 85%
BCM Replacement
Replacing a faulty Body Control Module with a new or refurbished unit.
- Total: $300 - $800
- Success rate: 90%
Software Update
Updating the BCM software to fix any glitches that may cause communication issues.
- Total: $50 - $150
- Success rate: 70%
Money-Saving Tips for C0695
- 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 C0695 Diagnosis Process
Follow these systematic steps to accurately diagnose C0695. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Start with an initial visual inspection
Step 1: Start with an initial visual inspection. Check for damaged wiring, loose connections, or any signs of corrosion around the BCM and related connectors (5-10 minutes).
Step 2: Step 2: Use the GeekOBD APP to perform an OBD2 scan and retrieve all diagnostic codes along with freeze frame data to better understand the fault context (10-15 minutes)
Step 2: Use the GeekOBD APP to perform an OBD2 scan and retrieve all diagnostic codes along with freeze frame data to better understand the fault context (10-15 minutes).
Step 3: Step 3: Conduct component testing
Step 3: Conduct component testing. Use a multimeter to check the voltage and ground at the BCM connectors to confirm proper operation (20-30 minutes).
Step 4: Step 4: Perform a system function test to ensure everything operates correctly after any repairs
Step 4: Perform a system function test to ensure everything operates correctly after any repairs. Clear the codes and check for any reoccurrence (10-15 minutes).
Step 5: Step 5: Finally, conduct a road test
Step 5: Finally, conduct a road test. Drive the vehicle under various conditions to ensure that the issue has been resolved and no new codes appear (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: Repair of C0695 in a 2017 Chevrolet Silverado 1500
Vehicle: 2017 Chevrolet Silverado 1500, 50,000 miles
Problem: The owner reported that the power windows and interior lights were not functioning.
Diagnosis: After scanning with the GeekOBD APP, the C0695 code was identified. A visual inspection revealed damaged wiring near the BCM.
Solution: Replaced the damaged wiring and secured all connectors, followed by a system function test to ensure proper operation.
Cost: $300 (parts $100, labor $200)
Result: All electronic features returned to normal operation, and no further issues were reported.
Case Study 2: BCM Replacement in a 2019 GMC Sierra 1500
Vehicle: 2019 GMC Sierra 1500, 30,000 miles
Problem: Customer experienced intermittent issues with the vehicle's lighting and keyless entry system.
Diagnosis: Diagnostic scanning indicated a persistent C0695 code. Testing confirmed a faulty BCM.
Solution: Replaced the Body Control Module and updated the software to ensure compatibility.
Cost: $750 (parts $500, labor $250)
Result: Post-repair testing showed all electronic functions were restored and working correctly.