Quick Answer
U0660 means: DTC U0660 indicates a communication failure between the body control module and other vehicle modules.
Can I drive with U0660? Immediate attention is recommended to avoid potential vehicle malfunction.
Common Questions
What does U0660 mean and how does it affect my car?
DTC U0660 signifies a communication failure between the body control module and other electronic components in your vehicle. This can result in a variety of issues, such as malfunctioning lights, starting problems, and erratic dashboard readings. If ignored, it could lead to more serious electrical problems, affecting the overall performance and safety of your vehicle.
What are the most common causes of U0660 and how much does it cost to fix?
The most common causes of U0660 include a faulty body control module, damaged wiring, and sensor failures. Repair costs can vary widely; replacing the BCM can cost between $300 to $800, while wiring repairs may range from $100 to $300.
Can I drive my car with U0660 or should I stop immediately?
It is not advisable to drive your vehicle with a U0660 code. Continuing to drive could lead to safety issues, such as lights malfunctioning or the vehicle failing to start. Immediate inspection and repair are recommended.
How can I diagnose U0660 myself using GeekOBD APP?
To diagnose U0660 using the GeekOBD APP, start by scanning your vehicle for trouble codes. The app will provide you with real-time data and freeze frame information, which can help you pinpoint the issue. Look for any additional codes that may indicate related problems.
What vehicles are most commonly affected by U0660?
DTC U0660 is commonly reported in several models, especially the 2016-2021 Ford F-150. Other vehicles may include certain models from Dodge, Chevrolet, and Nissan, depending on their electronic setup.
How can I prevent U0660 from happening again?
To prevent the U0660 code from recurring, ensure regular maintenance of your vehicle's electrical systems. Keep an eye on the condition of wiring and connectors, and address any signs of corrosion or wear immediately.
What is U0660?
DTC U0660 refers to a communication error in the vehicle's network. Specifically, it indicates that the body control module (BCM) is not receiving or sending signals correctly to other modules in the vehicle's electronic network. This can lead to various issues affecting vehicle performance and safety. In practical terms, if your vehicle is showing this code, you might notice problems such as malfunctioning lights, erratic dashboard readings, or even the inability to start the vehicle. The U0660 code is commonly found in a variety of models, but it has been frequently reported in 2016-2021 Ford F-150 trucks. If left unaddressed, this communication issue can escalate, leading to more significant electrical problems and potentially leaving you stranded. Therefore, understanding and resolving the U0660 code is critical for maintaining the reliability and safety of your vehicle.
System: U - Network (Communication, CAN Bus)
Symptoms
Common symptoms when U0660 is present:
- Check engine light illuminates and remains on, indicating a persistent issue.
- Electrical components like headlights or dashboard lights flicker or work intermittently, affecting visibility and instrument readings.
- Vehicle may experience starting issues, such as the engine cranking but not starting, which could lead to frustrating moments.
- Malfunctioning power windows or door locks, making it difficult to operate the vehicle effectively.
- Reduced fuel economy due to erratic engine management and performance issues, potentially leading to a 10-20% decrease.
Possible Causes
Most common causes of U0660 (ordered by frequency):
- Faulty body control module (BCM) - This is the most common cause, with a likelihood of around 60%. A defective BCM can disrupt communication between vehicle modules.
- Damaged wiring or connectors - Corrosion or physical damage to wiring harnesses can interrupt signals, accounting for approximately 25% of cases.
- Faulty sensors affecting module communication - Sometimes, individual sensors that are failing can lead to this code, though less common, it can occur.
- Software issues or updates needed - Occasionally, software glitches in the BCM can result in communication failures, a rare but possible cause.
- Environmental factors - Water intrusion or extreme temperatures can affect module performance, though this is less frequent.
U0660 Repair Costs
Cost Breakdown by Repair Type
Replace Body Control Module
If the BCM is found to be faulty, replacing it is often necessary. This involves reprogramming the new module to work with your vehicle’s systems.
- Total: $300 - $800
- Success rate: 85%
Repair Wiring Harness
If damaged wiring is found, repairing or replacing sections of the wiring harness can restore proper communication.
- Total: $100 - $300
- Success rate: 75%
Money-Saving Tips for U0660
- 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 U0660 Diagnosis Process
Follow these systematic steps to accurately diagnose U0660. 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 BCM and related components for proper voltage and ground (20-30 minutes)
Step 3: Component testing - Use a multimeter to test BCM and related components for proper voltage and ground (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes using GeekOBD APP (10-15 minutes)
Step 4: System function test - Verify proper operation after repairs and clear codes using GeekOBD APP (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success (15-20 minutes)
Step 5: Road test verification - Drive the 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: Ford F-150 BCM Replacement
Vehicle: 2020 Ford F-150, 45,000 miles
Problem: Customer reported intermittent starting issues and dashboard warning lights.
Diagnosis: After scanning with GeekOBD, the U0660 code was confirmed and a faulty BCM was identified.
Solution: Replaced the BCM and reprogrammed it to synchronize with the vehicle’s systems.
Cost: $650 (parts: $500, labor: $150)
Result: Vehicle started reliably, and all warning lights disappeared after repair.
Case Study 2: Wiring Harness Repair on Dodge Ram
Vehicle: 2017 Dodge Ram 1500, 60,000 miles
Problem: Driver reported flickering headlights and failure of other electronic accessories.
Diagnosis: Inspection revealed damaged wiring in the harness that led to the U0660 code.
Solution: Repaired the damaged wiring with new connectors and insulation.
Cost: $200 (parts: $50, labor: $150)
Result: All electrical components functioned correctly after the repair.