U0585 - Lost Communication with Vehicle Control Module - Common in 2015-2020 Ford F-150 and Chevrolet Silverado

Quick Answer

U0585 means: U0585 indicates a communication breakdown between vehicle control modules.

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

Can I drive with U0585? Immediate attention required to avoid further complications.

Common Questions

What does U0585 mean and how does it affect my car?

The U0585 code indicates that there's an issue with communication between various modules in your vehicle. This can lead to various operational problems, including stalling, erratic dashboard indicators, or failure of essential systems like the transmission. If left unresolved, these issues can escalate, affecting your vehicle's performance and safety.

What are the most common causes of U0585 and how much does it cost to fix?

Common causes of U0585 include damaged wiring (40% likelihood), corrosion in connectors, and software issues. Repair costs can range from $150 for minor wiring repairs to $1000 for control module replacements, depending on the severity of the issue.

Can I drive my car with U0585 or should I stop immediately?

Driving with a U0585 code is risky, as it can lead to unpredictable vehicle behavior such as stalling or loss of control. It's advisable to stop and diagnose the issue promptly to ensure your safety.

How can I diagnose U0585 myself using GeekOBD APP?

To diagnose U0585 with the GeekOBD APP, start by scanning for all DTCs to see if U0585 appears alongside any other codes. Use the freeze frame data to understand the conditions under which the code was triggered. Perform a visual inspection using the app's guidance, and follow up with component testing as needed.

What vehicles are most commonly affected by U0585?

Vehicles frequently affected by U0585 include the 2015-2020 Ford F-150, Chevrolet Silverado, and various models from GMC and Dodge. Check for any recalls or technical service bulletins (TSBs) related to communication issues for your specific model.

How can I prevent U0585 from happening again?

Preventive measures include regular inspections of wiring and connectors, ensuring that software is up to date, and avoiding aftermarket modifications that could interfere with the electrical system.

What is U0585?

The diagnostic trouble code (DTC) U0585 indicates a loss of communication with a specific vehicle control module, which could be anything from the body control module to the engine control unit. This code typically surfaces when the onboard diagnostics system detects that one module is unable to communicate with another. It's crucial to understand that modern vehicles rely heavily on multiple control modules to function correctly. For instance, if the powertrain control module (PCM) can't communicate with the transmission control module (TCM), you may encounter issues with shifting, acceleration, or even starting the vehicle. The real-world implications can vary widely from minor inconveniences—like your infotainment system malfunctioning—to serious safety concerns, such as loss of engine control or erratic behavior of vehicle systems. If not addressed promptly, this could lead to further complications and escalate repair costs. Therefore, recognizing the symptoms and understanding the causes of DTC U0585 can help you take the right steps before a small issue turns into a major repair. While this code can appear in various makes and models, it’s particularly common in vehicles like the Ford F-150 and Chevrolet Silverado between 2015 and 2020.

System: U - Network (Communication, CAN Bus)

Symptoms

Common symptoms when U0585 is present:

  • Check engine light remains on or flashes intermittently, often indicating a deeper problem that needs immediate attention.
  • Dashboard lights flicker or behave erratically, leading to confusion about the vehicle's operational status.
  • Engine may hesitate or stall unexpectedly during acceleration, posing a safety risk in traffic situations.
  • Infotainment system may become unresponsive, affecting navigation and audio functionality.
  • Vehicle may experience reduced fuel efficiency as the engine struggles to communicate with other systems.

Possible Causes

Most common causes of U0585 (ordered by frequency):

  1. A faulty wiring harness or damaged connector is the most common cause, observed in about 40% of cases. This can occur from wear and tear or exposure to moisture.
  2. Corrosion in the connectors can lead to poor connections, preventing modules from communicating effectively. This is particularly prevalent in regions with harsh weather conditions.
  3. Software glitches in the control modules can also cause this DTC to trigger. Regular updates and maintenance can help mitigate this risk.
  4. Less common but serious causes include a failing control module itself, which may require replacement to resolve communication issues.
  5. Rarely, external factors such as aftermarket accessories interfering with electrical systems can trigger this code.

U0585 Repair Costs

Cost Breakdown by Repair Type

Wiring Harness Repair

Repairing or replacing damaged wiring and connectors.

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

Replacing the faulty control module that is not communicating.

  • Total: $300 - $1000
  • Success rate: 90%
Money-Saving Tips for U0585
  • 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 U0585 Diagnosis Process

Follow these systematic steps to accurately diagnose U0585. 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).

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: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context

Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context. Make sure to check for any related 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 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).

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: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP to check if the issue persists (10-15 minutes)

Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP to check if the issue persists (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: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure all systems are functioning properly (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure all systems are functioning properly (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: Ford F-150 U0585 Repair Case

Vehicle: 2017 Ford F-150, 65,000 miles

Problem: Customer reported intermittent stalling and dashboard lights flickering.

Diagnosis: Initial scan revealed U0585 along with several other codes. Visual inspection showed corrosion in the wiring harness.

Solution: Replaced damaged wiring and connectors, and cleared codes. No further issues observed during road test.

Cost: $250 (wiring repair and diagnostics)

Result: Customer reported no more stalling and dashboard lights functioned normally.

Case Study 2: Chevrolet Silverado U0585 Case

Vehicle: 2019 Chevrolet Silverado, 30,000 miles

Problem: Vehicle would not start and displayed communication errors on the dashboard.

Diagnosis: Diagnostics confirmed U0585. Further inspection revealed a faulty control module.

Solution: Replaced the control module and reprogrammed it to the vehicle.

Cost: $800 (control module replacement)

Result: Vehicle started up without issues, and all systems functioned properly post-repair.

Diagnose U0585

Use GeekOBD APP for professional diagnosis!

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  • Professional-grade analysis
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Code Information

Code: U0585
System: Network (Communication, CAN Bus)
Severity: HIGH
Category: Network Codes