U064C - Communication Error in Vehicle Control Modules (Common in 2015-2018 Ford and BMW Models)

Quick Answer

U064C means: U064C indicates a communication error between vehicle control modules.

Fix: Check and replace faulty components Cost: $150 - $400 Time: 90-180 minutes

Can I drive with U064C? Immediate attention is advised to prevent potential system failures.

Common Questions

What does U064C mean and how does it affect my car?

The U064C code indicates that there is a communication issue between various control modules in your vehicle. This can lead to problems with engine performance, electronic features, and overall vehicle functionality. If not addressed, it can result in reduced efficiency and safety concerns.

What are the most common causes of U064C and how much does it cost to fix?

The most common causes include damaged wiring (60% likelihood), faulty control modules, and software glitches. Repair costs can range from $150 to $1,200 depending on whether it's a simple wiring fix or a module replacement.

Can I drive my car with U064C or should I stop immediately?

It's recommended to avoid driving the vehicle if U064C is present. Ignoring this code can lead to serious performance issues and potential safety risks. Get the issue diagnosed as soon as possible.

How can I diagnose U064C myself using GeekOBD APP?

To diagnose U064C with the GeekOBD APP, connect the app to your vehicle’s OBD2 port, run a scan to retrieve the DTCs, and check the freeze frame data for additional context on the error. Look for patterns in symptoms to aid in your troubleshooting.

What vehicles are most commonly affected by U064C?

Commonly affected vehicles include the 2015-2018 Ford F-150, BMW 3 Series, and other models from Ford and BMW during this period. Be sure to check for any recalls or technical service bulletins related to these issues.

How can I prevent U064C from happening again?

Regular maintenance, including inspections of wiring and connections, can prevent issues leading to U064C. Keeping your vehicle's software updated and addressing any warning lights promptly can also help avoid future occurrences.

What is U064C?

The Diagnostic Trouble Code (DTC) U064C indicates a communication error between vehicle control modules, which can significantly impact the performance of various systems in your car. This code typically arises when the Engine Control Module (ECM) or other related modules cannot communicate effectively with each other. In many cases, this can be due to wiring issues, faulty modules, or software glitches. When a U064C code is present, you may notice that certain features in your vehicle are not functioning correctly, such as the dashboard warning lights or electronic control systems. Understanding this code is vital because it can lead to more serious problems if left unaddressed, such as reduced fuel efficiency or intermittent system failures. Commonly found in models like the 2015-2018 Ford F-150 and BMW 3 Series, this code can be triggered by various underlying issues. Therefore, if your vehicle's computer detects this error, it’s essential to perform a thorough diagnostic to pinpoint the exact cause and take appropriate action. Ignoring the U064C code can lead to further complications, including extended repair times and higher costs, as well as safety concerns if critical systems fail.

System: U - Network (Communication, CAN Bus)

Symptoms

Common symptoms when U064C is present:

  • The check engine light remains illuminated, indicating a persistent issue with vehicle systems.
  • You may experience erratic behavior of electronic components, such as power windows or door locks not functioning as expected.
  • Fuel economy may decrease noticeably, often by 10-15%, as the engine struggles to operate efficiently.
  • Dashboard warning lights may activate unexpectedly, including ABS or traction control indicators.
  • Engine performance can feel sluggish, with noticeable hesitations during acceleration.

Possible Causes

Most common causes of U064C (ordered by frequency):

  1. The most common cause is damaged wiring or poor connections, which is responsible for about 60% of cases. This often occurs due to wear and tear or exposure to moisture.
  2. Another likely cause is a faulty control module, which can disrupt communication. This may arise from manufacturing defects or electrical surges.
  3. Software glitches in the vehicle's firmware can also lead to this code. Regular updates can prevent these issues, so keeping software current is crucial.
  4. Less common but serious causes include corrosion at connection points, which can block signals and lead to miscommunication among modules.
  5. A rare cause could be a malfunction in the vehicle's CAN (Controller Area Network) system, which is responsible for data communication across modules.

U064C Repair Costs

Cost Breakdown by Repair Type

Wiring Repair

Repair of damaged wiring and connections to restore proper communication.

  • Total: $150 - $400
  • Success rate: 85%
Control Module Replacement

Replacing a faulty control module that is preventing communication.

  • Total: $500 - $1,200
  • Success rate: 90%
Software Update

Updating the vehicle's software to fix potential glitches in communication.

  • Total: $100 - $200
  • Success rate: 75%
Money-Saving Tips for U064C
  • 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 U064C Diagnosis Process

Follow these systematic steps to accurately diagnose U064C. 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. Look for damaged wiring, loose connections, or corrosion around control modules (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: Use a reliable OBD2 scan tool, such as the GeekOBD APP, to retrieve all codes and associated freeze frame data, which provides context for the U064C code (10-15 minutes)

Step 2: Use a reliable OBD2 scan tool, such as the GeekOBD APP, to retrieve all codes and associated freeze frame data, which provides context for the U064C code (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Perform component testing with a multimeter or specific diagnostic tools to locate the source of the communication error (20-30 minutes)

Step 3: Perform component testing with a multimeter or specific diagnostic tools to locate the source of the communication error (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: Conduct a system function test to verify that all modules are operating correctly after repairs and clear any stored codes (10-15 minutes)

Step 4: Conduct a system function test to verify that all modules are operating correctly after repairs and clear any stored codes (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Finally, take the vehicle for a road test under various conditions to ensure that the repair was successful and no codes reappear (15-20 minutes)

Step 5: Finally, take the vehicle for a road test under various conditions to ensure that the repair was successful and no codes reappear (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

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: 2016 Ford F-150 U064C Communication Error

Vehicle: 2016 Ford F-150, 45,000 miles

Problem: Customer reported engine hesitations and dashboard warning lights.

Diagnosis: Initial diagnostics revealed U064C with other related codes. A visual inspection found corroded wiring harness connections.

Solution: Replaced damaged wiring and cleaned all connectors. Conducted software updates.

Cost: $350

Result: The vehicle performed normally after repair, and no codes reappeared after a follow-up test drive.

Case Study 2: 2017 BMW 3 Series U064C Issue

Vehicle: 2017 BMW 3 Series, 30,000 miles

Problem: Intermittent engine performance issues and electronic features failing.

Diagnosis: Scanned for codes and found U064C. Component testing revealed a malfunctioning control module.

Solution: Replaced the faulty control module and updated the vehicle's software.

Cost: $1,000

Result: The vehicle's performance improved significantly, and all electronic features functioned correctly after repair.

Diagnose U064C

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: U064C
System: Network (Communication, CAN Bus)
Severity: HIGH
Category: Network Codes