Quick Answer
U0586 means: U0586 signifies a communication error between vehicle control modules.
Can I drive with U0586? Immediate attention is recommended to prevent further electrical issues.
Common Questions
What does U0586 mean and how does it affect my car?
The U0586 code indicates a communication error between vehicle control modules, which can lead to various electrical issues and affect vehicle performance. If left unaddressed, it may result in stalling, erratic behaviors, or even complete failures of essential systems.
What are the most common causes of U0586 and how much does it cost to fix?
Common causes include faulty wiring (60% likelihood) and defective modules (25% likelihood). Repair costs can vary, typically ranging from $150 for wiring repairs to $1,200 for module replacements.
Can I drive my car with U0586 or should I stop immediately?
While you may be able to drive short distances, it is not advisable to ignore the U0586 code. Continuing to drive can exacerbate the problem and lead to safety concerns. It's best to seek professional diagnosis and repair as soon as possible.
How can I diagnose U0586 myself using GeekOBD APP?
To diagnose U0586, connect the GeekOBD APP to your vehicle's OBD2 port. Use the app to retrieve trouble codes and view freeze frame data. This will help you understand the conditions that triggered the code and assist in pinpointing the root cause.
What vehicles are most commonly affected by U0586?
Vehicles like the 2016-2020 Chevrolet Silverado, 2017-2019 GMC Sierra, and certain models from Ford and Dodge are frequently affected. Be sure to check for any recalls or technical service bulletins (TSBs) related to communication issues.
How can I prevent U0586 from happening again?
Regular maintenance checks, keeping electrical connections clean and tight, and avoiding aftermarket modifications can help prevent issues that lead to U0586. Additionally, consider software updates during regular service intervals.
What is U0586?
The Diagnostic Trouble Code (DTC) U0586 indicates a communication error between various electronic control modules (ECMs) in your vehicle. In modern vehicles, numerous modules work in tandem to control systems like the engine, transmission, brakes, and more. When one module fails to communicate effectively with another, it triggers this code. This can happen due to several reasons, including wiring issues, faulty modules, or even software glitches. For example, in a 2016 Chevrolet Silverado, this code may appear if the Body Control Module (BCM) can’t send or receive data from the Engine Control Module (ECM). Drivers may notice symptoms like dashboard warning lights, erratic vehicle behavior, or failure of certain electrical components. Ignoring U0586 can lead to more severe issues, as it affects the overall performance of the vehicle. Regular diagnostics and timely repairs can prevent further complications, ensuring that all systems operate smoothly and safely.
System: U - Network (Communication, CAN Bus)
Symptoms
Common symptoms when U0586 is present:
- Check engine light activates, remaining illuminated until the issue is resolved.
- Dashboard warning lights for various systems may flash or behave inconsistently, confusing the driver.
- Erratic electrical behavior, such as windows or locks operating intermittently.
- Power steering may feel unresponsive or heavy, affecting driving safety.
- Vehicle might stall or hesitate during acceleration, leading to a dangerous driving scenario.
Possible Causes
Most common causes of U0586 (ordered by frequency):
- Faulty wiring between control modules (60% likelihood), often due to wear, corrosion, or damage from environmental factors.
- Defective control module (25% likelihood), where specific modules like the BCM or ECM may malfunction, requiring replacement.
- Software issues (10% likelihood), where outdated or corrupted software may cause communication failures.
- Less common cause: connector issues, where poor connections can lead to intermittent faults.
- Rare cause: aftermarket modifications, which can interfere with the vehicle's factory communication protocols.
U0586 Repair Costs
Cost Breakdown by Repair Type
Wiring Repair/Replacement
Repair or replace damaged wiring and connectors affecting communication.
- Total: $150 - $400
- Success rate: 80%
Module Replacement
Replace faulty ECM or BCM that are not communicating properly.
- Total: $400 - $1200
- Success rate: 90%
Software Update
Update the vehicle's software to resolve communication issues.
- Total: $100 - $300
- Success rate: 70%
Money-Saving Tips for U0586
- 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 U0586 Diagnosis Process
Follow these systematic steps to accurately diagnose U0586. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Perform a visual inspection of wiring and connectors for visible damage or corrosion (5-10 minutes)
Step 1: Perform a visual inspection of wiring and connectors for visible damage or corrosion (5-10 minutes).
Step 2: Step 2: Use a diagnostic tool like the GeekOBD APP to read all codes and freeze frame data for context (10-15 minutes)
Step 2: Use a diagnostic tool like the GeekOBD APP to read all codes and freeze frame data for context (10-15 minutes).
Step 3: Step 3: Test suspected modules with a multimeter or specialized diagnostic tool to confirm their functionality (20-30 minutes)
Step 3: Test suspected modules with a multimeter or specialized diagnostic tool to confirm their functionality (20-30 minutes).
Step 4: Step 4: Conduct a system function test to ensure all modules communicate effectively after any repairs (10-15 minutes)
Step 4: Conduct a system function test to ensure all modules communicate effectively after any repairs (10-15 minutes).
Step 5: Step 5: Take the vehicle for a road test under various conditions to verify that the repair was successful (15-20 minutes)
Step 5: Take the vehicle for a road test under various conditions to verify that the repair was successful (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: Faulty BCM in a 2017 Chevrolet Silverado
Vehicle: 2017 Chevrolet Silverado LT, 45,000 miles
Problem: Customer reported dashboard warning lights and intermittent power steering.
Diagnosis: Using the GeekOBD APP, we identified U0586 and performed a visual inspection, revealing corrosion on the BCM connectors.
Solution: Replaced the BCM and repaired the affected wiring harness.
Cost: $800 (parts: BCM $600, labor $200)
Result: Post-repair, all systems functioned properly, and the warning lights cleared.
Case Study 2: Wiring Issues in a 2018 Ford F-150
Vehicle: 2018 Ford F-150 Lariat, 30,000 miles
Problem: Driver experienced stalling and erratic electrical behavior.
Diagnosis: Utilized GeekOBD to retrieve U0586 and found damaged wiring under the driver's seat.
Solution: Repaired the wiring and secured all connections.
Cost: $200 (parts: wiring $50, labor $150)
Result: Vehicle returned to normal operation with no further issues.