Quick Answer
C0B4C means: C0B4C signifies a communication issue between the body control module and the seat control module.
Can I drive with C0B4C? While it may not require immediate action, it should be diagnosed and repaired soon to ensure vehicle comfort and safety.
Common Questions
What does C0B4C mean and how does it affect my car?
The C0B4C code indicates a communication error between the body control module and the seat control module. This can result in malfunctions of the seat functions, impacting your comfort and safety while driving.
What are the most common causes of C0B4C and how much does it cost to fix?
Common causes include a faulty seat control module, damaged wiring, or software glitches in the BCM. Repair costs can range from $50 for a software update to $600 for module replacement.
Can I drive my car with C0B4C or should I stop immediately?
While you may continue to drive, it's advisable to have the issue diagnosed soon. Ignoring it could lead to further complications, especially if the seat becomes stuck or unadjustable.
How can I diagnose C0B4C myself using GeekOBD APP?
Using the GeekOBD APP, scan for DTCs and review freeze frame data. Check for any related codes and inspect the seat control module wiring for visible damage or disconnections.
What vehicles are most commonly affected by C0B4C?
The C0B4C code is frequently reported in 2015-2020 Ford F-150 models, as well as some models from Ford's other lines like the Explorer and Edge.
How can I prevent C0B4C from happening again?
Regular maintenance checks, especially for wiring and connections in electronic systems, can help prevent issues. Keeping the interior dry and avoiding water exposure to electronic components is also crucial.
What is C0B4C?
The C0B4C diagnostic trouble code indicates a communication error within the vehicle's body control module (BCM). Specifically, this code is related to the seat control module, which governs the operation of the power seat functions. When the BCM detects that the seat control module is not responding as expected, it triggers the C0B4C code. This issue can lead to various seat-related problems, such as the inability to adjust the seat position, which can impact driving comfort and safety. If you own a vehicle like the 2015-2020 Ford F-150, you may experience symptoms like the power seats failing to move or the memory seat functions not working correctly. It's important to address this code promptly, as unresolved communication issues can lead to further electrical problems or even affect other vehicle systems. A proper diagnosis using an OBD2 scanner is crucial to pinpoint the exact cause of the issue, which may include wiring problems, faulty components, or even software glitches within the BCM. Regular maintenance and inspections can help prevent such issues from arising in the first place.
System: C - Chassis (ABS, Steering, Suspension)
Symptoms
Common symptoms when C0B4C is present:
- The power seat functions become unresponsive, preventing adjustments that affect driving comfort.
- Memory seat settings fail to save or recall properly, which can be frustrating for drivers who frequently switch between settings.
- The seat may get stuck in one position, making it difficult for the driver to find a comfortable driving position.
- Warning lights or messages may appear on the dashboard, signaling a problem with the seat control system.
- In some cases, related features like heated or cooled seats may also stop functioning.
Possible Causes
Most common causes of C0B4C (ordered by frequency):
- The most common cause of the C0B4C code is a faulty seat control module, with a likelihood of 40%. This module may fail due to wear and tear or electrical issues.
- Another likely cause is damaged wiring or poor connections in the circuit that connects the seat control module to the BCM, contributing to about 30% of cases. Regular checks can help prevent these issues.
- A software glitch in the BCM could lead to communication errors, accounting for roughly 20% of occurrences. Updating the vehicle's software can often resolve this.
- Less common but serious causes include water intrusion in the connectors or modules, which can lead to corrosion and extensive damage.
- A rare cause could be a fault in the BCM itself, leading to communication issues that may require replacement.
C0B4C Repair Costs
Cost Breakdown by Repair Type
Seat Control Module Replacement
Replacing a faulty seat control module is often necessary if the module is confirmed to be the issue.
- Total: $250 - $600
- Success rate: 85%
Wiring Repair
Repairing damaged wiring or connectors can resolve communication issues without needing to replace the module.
- Total: $100 - $300
- Success rate: 90%
BCM Software Update
Updating the body control module's software can fix glitches that cause communication errors.
- Total: $50 - $150
- Success rate: 70%
Money-Saving Tips for C0B4C
- 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 C0B4C Diagnosis Process
Follow these systematic steps to accurately diagnose C0B4C. 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 seat control module and related wiring for continuity and voltage (20-30 minutes)
Step 3: Component testing - Use a multimeter to test the seat control module and related wiring for continuity and voltage (20-30 minutes).
Step 4: Step 4: System function test - After repairs, verify proper operation of the seat controls and clear codes using the GeekOBD APP (10-15 minutes)
Step 4: System function test - After repairs, verify proper operation of the seat controls and clear codes using the GeekOBD APP (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm that the seat functions operate correctly (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm that the seat functions operate correctly (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: Seat Control Module Replacement on 2018 Ford F-150
Vehicle: 2018 Ford F-150, 45,000 miles
Problem: Customer reported that the power seat would not adjust and memory settings were not functioning.
Diagnosis: Performed an OBD2 scan using GeekOBD APP, confirmed C0B4C code, and inspected wiring under the seat, finding damaged connections.
Solution: Replaced the seat control module and repaired the wiring harness.
Cost: $450 (Module: $350, Labor: $100)
Result: Seat functions restored, and customer reported satisfaction with the repair.
Case Study 2: Wiring Repair on 2019 Ford Explorer
Vehicle: 2019 Ford Explorer, 30,000 miles
Problem: Power seat adjustments were sporadic, with the C0B4C code appearing intermittently.
Diagnosis: Used the GeekOBD APP to scan, finding the C0B4C. Inspected wiring for signs of wear.
Solution: Repaired frayed wiring connections leading to the seat control module.
Cost: $150 (Labor: $50, Parts: $100 for connectors)
Result: Issue resolved with the seat functioning properly.