Quick Answer
U068B means: DTC U068B indicates a communication failure between the body control module and other vehicle systems.
Can I drive with U068B? Seek immediate diagnostic and repair to avoid further issues.
Common Questions
What does U068B mean and how does it affect my car?
DTC U068B indicates a communication failure between the body control module and other systems in your vehicle. This can lead to various functionality issues, including problems with lights, power windows, and locks. If not addressed, it may lead to safety risks and further electrical problems.
What are the most common causes of U068B and how much does it cost to fix?
Common causes include damaged wiring, faulty body control modules, and software issues. Repair costs can range from $150 for wiring repairs to $600 for BCM replacement. It's important to get a thorough diagnosis to pinpoint the exact cause before proceeding with repairs.
Can I drive my car with U068B or should I stop immediately?
While you may be able to drive your vehicle, it is not advisable to ignore the U068B code. Driving with this issue can lead to further electrical problems and safety risks. It's best to have your car diagnosed and repaired as soon as possible.
How can I diagnose U068B myself using GeekOBD APP?
To diagnose U068B using the GeekOBD APP, connect the app to your vehicle’s OBD2 port, run a full scan to retrieve the codes and freeze frame data, and analyze any additional codes that may provide context for the communication issue. This will help you understand the problem better.
What vehicles are most commonly affected by U068B?
DTC U068B is frequently seen in 2016-2020 Ford Explorer models, among others. If you own a Ford vehicle from this range, it's important to be aware of this code and its symptoms.
How can I prevent U068B from happening again?
To prevent U068B from recurring, regularly inspect your vehicle’s wiring and connectors for wear, keep software updated, and avoid installing aftermarket electronic devices that could interfere with your vehicle’s systems.
What is U068B?
DTC U068B is a diagnostic trouble code that indicates a communication issue between the body control module (BCM) and other control modules in the vehicle. This code is particularly prevalent in certain Ford models, such as the 2016 to 2020 Ford Explorer, where the BCM orchestrates multiple electrical components, including lights, windows, and locks. When the BCM fails to communicate effectively, it can lead to various operational failures, impacting overall vehicle performance. Drivers may experience symptoms like erratic behavior of electrical functions, warning lights illuminating on the dashboard, or even complete failure of certain features. This code can arise from wiring issues, faulty connectors, or even software glitches within the BCM. It is essential to address this issue promptly as it can lead to more significant problems if left unresolved. Ignoring DTC U068B can result in further communication failures among other modules, potentially leading to safety concerns and expensive repairs down the road. Regular maintenance, including software updates and checking for corrosion or damage in wiring, can help mitigate the risk of encountering this code.
System: U - Network (Communication, CAN Bus)
Symptoms
Common symptoms when U068B is present:
- The check engine light is illuminated continuously, signaling a potential fault.
- Power windows or locks may be unresponsive or function erratically, causing inconvenience.
- Dashboard warning lights may flicker or stay on, indicating electrical malfunctions.
- Intermittent issues with the vehicle's lighting system, such as headlights or taillights not working correctly.
- Unexpected resets or malfunctions of infotainment systems, leading to a frustrating user experience.
Possible Causes
Most common causes of U068B (ordered by frequency):
- A common cause of U068B is damaged wiring or poor connections, occurring in around 60% of cases. Corrosion or wear can disrupt communication between modules.
- Another frequent cause is a faulty body control module, which can fail due to internal component issues or software corruption. This happens approximately 25% of the time.
- In some cases, a software update may be required to resolve communication errors; this is less common but should be checked during diagnosis.
- Less commonly, issues with the vehicle's main harness can lead to U068B, potentially caused by physical damage or wear, which can be serious.
- Rarer still, external electronic interference from aftermarket devices or components can disrupt module communication.
U068B Repair Costs
Cost Breakdown by Repair Type
BCM Replacement
Replacing the body control module due to failure.
- Total: $300 - $600
- Success rate: 85%
Wiring Repair
Repairing damaged wiring and connectors.
- Total: $150 - $250
- Success rate: 90%
Software Update
Updating the BCM software to correct communication issues.
- Total: $50 - $150
- Success rate: 70%
Money-Saving Tips for U068B
- 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 U068B Diagnosis Process
Follow these systematic steps to accurately diagnose U068B. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Conduct an initial visual inspection to identify any obvious signs of damage, such as frayed wires or loose connectors, which could take about 5-10 minutes
Step 1: Conduct an initial visual inspection to identify any obvious signs of damage, such as frayed wires or loose connectors, which could take about 5-10 minutes.
Step 2: Step 2: Use the GeekOBD APP to perform an OBD2 scan and retrieve all codes along with freeze frame data to establish the context of the fault, estimated at 10-15 minutes
Step 2: Use the GeekOBD APP to perform an OBD2 scan and retrieve all codes along with freeze frame data to establish the context of the fault, estimated at 10-15 minutes.
Step 3: Step 3: Conduct component testing using a multimeter or dedicated diagnostic tools to test suspected faulty components, which may take around 20-30 minutes
Step 3: Conduct component testing using a multimeter or dedicated diagnostic tools to test suspected faulty components, which may take around 20-30 minutes.
Step 4: Step 4: Perform a system function test to ensure all modules are communicating correctly after any repairs and clear the codes, which can take about 10-15 minutes
Step 4: Perform a system function test to ensure all modules are communicating correctly after any repairs and clear the codes, which can take about 10-15 minutes.
Step 5: Step 5: Carry out a road test under various driving conditions to confirm that the U068B code does not reappear, which typically requires 15-20 minutes
Step 5: Carry out a road test under various driving conditions to confirm that the U068B code does not reappear, which typically requires 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: BCM Replacement in a 2018 Ford Explorer
Vehicle: 2018 Ford Explorer, 45,000 miles
Problem: Customer reported intermittent lighting and power lock failures.
Diagnosis: Diagnosed U068B after visual inspection revealed damaged wiring at the BCM. Further testing confirmed BCM malfunction.
Solution: Replaced the body control module and repaired wiring connections.
Cost: $550 (BCM $450, labor $100)
Result: All electrical features restored to normal operation, and no reoccurrence of the code.
Case Study 2: Wiring Repair on a 2017 Ford Fusion
Vehicle: 2017 Ford Fusion, 36,000 miles
Problem: Driver experienced issues with power windows and dashboard lights.
Diagnosis: Performed a scan revealing U068B, followed by inspection that showed damaged wiring harness.
Solution: Repaired the damaged wiring and secured all connections.
Cost: $200 (labor $100, parts $100)
Result: Resolved all symptoms and cleared the DTC without further issues.