Quick Answer
U0659 means: U0659 indicates a communication error between vehicle control modules.
Can I drive with U0659? Immediate attention recommended to avoid further damage.
Common Questions
What does U0659 mean and how does it affect my car?
DTC U0659 indicates a breakdown in communication between essential vehicle control modules. This can lead to various performance issues and warning lights, jeopardizing safety and efficiency. Ignoring this code may exacerbate problems, leading to costly repairs.
What are the most common causes of U0659 and how much does it cost to fix?
Common causes include damaged wiring (60% likelihood) and faulty control modules. Repair costs can range from $100 for wiring fixes to $800 for module replacements, depending on the severity and parts required.
Can I drive my car with U0659 or should I stop immediately?
While it may be possible to drive with code U0659, it is not recommended. Doing so could lead to increased risks, such as stalling or loss of power, and may worsen the underlying issue.
How can I diagnose U0659 myself using GeekOBD APP?
To diagnose U0659, connect the GeekOBD APP to your vehicle's OBD2 port and scan for trouble codes. Analyze the freeze frame data and perform visual inspections of wiring and connectors to pinpoint the issue.
What vehicles are most commonly affected by U0659?
Commonly affected vehicles include the 2015-2018 Ford Focus and 2016-2019 Chevrolet Malibu. Always check for specific recalls or Technical Service Bulletins (TSBs) related to communication issues.
How can I prevent U0659 from happening again?
Regularly inspect and maintain your vehicle's wiring and connections, ensuring they are free from corrosion. Keep your car's software updated and consider professional inspections periodically to catch issues early.
What is U0659?
The diagnostic trouble code (DTC) U0659 indicates a communication fault between the vehicle control modules. This code is often triggered when one module cannot communicate properly with another, causing various electronic components to malfunction. In simpler terms, your vehicle's onboard computer systems aren't 'talking' to each other as they should. This issue can lead to a variety of symptoms, including warning lights on the dashboard, erratic behavior of electronic components, or even poor engine performance. The U0659 code is particularly common in vehicles manufactured between 2015 and 2019, such as the Ford Focus and Chevrolet Malibu, due to their increased reliance on electronic systems. If left unaddressed, this communication fault can lead to more significant issues, including reduced fuel efficiency and potential safety risks while driving. Therefore, understanding the implications of code U0659 is crucial for maintaining your vehicle's performance and ensuring your safety on the road.
System: U - Network (Communication, CAN Bus)
Symptoms
Common symptoms when U0659 is present:
- The check engine light remains illuminated, possibly accompanied by other warning lights like ABS or traction control.
- Drivers may experience erratic behavior in electronic components, such as power windows or infotainment system glitches.
- Fuel economy may decrease significantly, leading to a loss of 10-20% efficiency as the engine management system struggles to optimize performance.
- Unresponsive or delayed throttle response can occur, particularly during acceleration.
- The vehicle may exhibit stalling or hesitation during operation, raising safety concerns.
Possible Causes
Most common causes of U0659 (ordered by frequency):
- The most common cause of U0659 is damaged wiring or connectors, with a likelihood of about 60%. Poor connections can interrupt the communication between modules.
- A second common cause is a failing or faulty control module, which may not send or receive data properly. This can happen due to age or exposure to moisture.
- Another potential cause is software issues or corrupted data within one of the control modules. Regular software updates can help prevent this.
- Less commonly, issues with the vehicle's power supply, such as a weak battery or poor ground connections, can lead to communication failures.
- In rare cases, after-market modifications or installations can interfere with the vehicle’s electrical system, causing code U0659.
U0659 Repair Costs
Cost Breakdown by Repair Type
Wiring Repair
Repair or replace damaged wiring and connectors between control modules.
- Total: $100 - $300
- Success rate: 80%
Control Module Replacement
Replacing a faulty control module that is not communicating properly.
- Total: $300 - $800
- Success rate: 90%
Software Update
Updating the vehicle's software to fix communication issues.
- Total: $50 - $150
- Success rate: 70%
Money-Saving Tips for U0659
- 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 U0659 Diagnosis Process
Follow these systematic steps to accurately diagnose U0659. 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, focusing on wiring and connectors (20-30 minutes)
Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components, focusing on wiring and connectors (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP (10-15 minutes)
Step 4: System function test - Verify proper operation after repairs 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 repair success and monitor for any returning symptoms (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and monitor for any returning symptoms (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 Case Study: 2016 Ford Focus with U0659
Vehicle: 2016 Ford Focus, 45,000 miles
Problem: Driver reported check engine light and erratic dashboard behavior.
Diagnosis: Visual inspection revealed a damaged wiring harness. OBD2 scan confirmed U0659.
Solution: Repaired the wiring harness and reconnected the affected modules.
Cost: $250 for repairs and diagnostics.
Result: Post-repair, the vehicle operated normally with no recurring codes.
Case Study 2: Repair Case Study: 2017 Chevrolet Malibu with U0659
Vehicle: 2017 Chevrolet Malibu, 30,000 miles
Problem: Customer experienced intermittent stalling and check engine light.
Diagnosis: Diagnostic scan revealed U0659. Further testing showed a faulty control module.
Solution: Replaced the control module and updated the vehicle’s software.
Cost: $600 for parts and labor.
Result: The vehicle showed no further issues after the repair, and performance was restored.