U0B59 - Understanding DTC U0B59: Common Issues in 2016-2021 Ford Explorers and Other Models

Quick Answer

U0B59 means: U0B59 indicates a body control module communication issue.

Fix: Check and replace faulty components Cost: $400 - $800 Time: 90-180 minutes

Can I drive with U0B59? Immediate attention is recommended to avoid further electrical problems.

Common Questions

What does U0B59 mean and how does it affect my car?

DTC U0B59 indicates a communication problem within your vehicle's body control module. It can lead to various electrical issues, affecting everything from window operations to your vehicle's alarm system. If left unaddressed, it may cause more severe problems that could compromise safety and lead to costly repairs.

What are the most common causes of U0B59 and how much does it cost to fix?

Common causes include a faulty body control module, which can cost between $400 and $800 to replace, or corroded wiring, which may cost $100 to $300 to repair. It's essential to diagnose the specific issue to determine the most cost-effective solution.

Can I drive my car with U0B59 or should I stop immediately?

While you might be able to drive your vehicle, it is not advisable. Ignoring the U0B59 code can lead to further electrical failures, impacting safety features and potentially leaving you stranded. It's best to have the issue diagnosed and repaired as soon as possible.

How can I diagnose U0B59 myself using GeekOBD APP?

Using the GeekOBD APP, connect it to your vehicle's OBD-II port to retrieve codes. Focus on U0B59 and any other related codes. The app will provide freeze-frame data to help you understand the context of the problem, such as vehicle speed and engine load at the time of the fault.

What vehicles are most commonly affected by U0B59?

U0B59 is commonly reported in 2016-2021 Ford Explorers, as well as other Ford models from the same production years. Always check for any recalls or technical service bulletins (TSBs) related to the BCM for your specific vehicle.

How can I prevent U0B59 from happening again?

Regular maintenance of your vehicle's electrical system is key. This includes checking for moisture in electrical connectors, ensuring all wiring is intact and free of corrosion, and having your BCM software updated as necessary.

What is U0B59?

DTC U0B59 is a diagnostic trouble code that indicates a communication issue within the vehicle's network, particularly related to the body control module (BCM). This code often arises when there is a malfunction in the communication between the BCM and other control units in the vehicle. A common scenario involves the BCM failing to receive or send signals correctly, which can lead to various electrical components malfunctioning. For example, you might notice issues with your power windows, lighting systems, or even the vehicle's alarm system. Drivers may not always notice these issues immediately, but over time, they can lead to more significant problems, affecting vehicle performance and safety. If you find this code stored in your vehicle’s OBD-II system, it’s essential to address it promptly. Ignoring it could lead to further complications, such as complete failure of certain electrical systems, which may leave you stranded or facing costly repairs down the line. It's advisable to consult a professional mechanic or utilize a diagnostic tool like the GeekOBD APP to pinpoint the exact cause of the code and determine the necessary repairs.

System: U - Network (Communication, CAN Bus)

Symptoms

Common symptoms when U0B59 is present:

  • Check engine light stays on constantly, signaling a persistent issue with the vehicle's electrical system.
  • Power windows may operate sporadically, causing frustration and safety concerns when attempting to adjust windows.
  • Lighting systems, including headlights and interior lights, can malfunction, leading to visibility issues especially at night.
  • Vehicle alarm system may activate unexpectedly or fail to engage, affecting security.
  • Inconsistent performance of dashboard indicators, such as speedometer or fuel gauge, which can mislead the driver about vehicle status.

Possible Causes

Most common causes of U0B59 (ordered by frequency):

  1. The most common cause of U0B59 is a faulty body control module (BCM), which accounts for about 60% of cases. This component can fail due to age or electrical surges.
  2. Corroded or loose wiring connections in the vehicle’s electrical system contribute to around 25% of U0B59 codes, especially in older vehicles.
  3. Water intrusion into the BCM or its connectors can lead to communication failures. Regularly check for moisture in the vehicle, especially after heavy rain.
  4. Less common but serious causes include software issues in the BCM that may require a reprogramming or update from the manufacturer.
  5. Rarely, faulty sensors that communicate with the BCM, such as door or trunk sensors, can trigger this code, necessitating replacement.

U0B59 Repair Costs

Cost Breakdown by Repair Type

BCM Replacement

Replacing the body control module with a new or refurbished unit, including reprogramming to match the vehicle’s specifications.

  • Total: $400 - $800
  • Success rate: 85%
Electrical Wiring Repair

Repairing corroded or damaged wiring connections to ensure proper communication between components.

  • Total: $100 - $300
  • Success rate: 90%
Money-Saving Tips for U0B59
  • 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 U0B59 Diagnosis Process

Follow these systematic steps to accurately diagnose U0B59. 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 (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).

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 to test voltage and ground at the BCM and inspect wiring harnesses for continuity (20-30 minutes)

Step 3: Component testing - Use a multimeter to test voltage and ground at the BCM and inspect wiring harnesses for continuity (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 of systems controlled by the BCM after repairs and clear codes (10-15 minutes)

Step 4: System function test - Verify proper operation of systems controlled by the BCM after repairs and clear 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: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure no new codes appear (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure no new codes appear (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: 2018 Ford Explorer BCM Replacement

Vehicle: 2018 Ford Explorer, 45,000 miles

Problem: Customer reported issues with power windows and alarm system malfunctioning.

Diagnosis: Using the GeekOBD APP, the U0B59 code was retrieved, indicating a BCM communication issue. Visual inspection revealed corrosion on the BCM connectors.

Solution: Replaced the body control module and repaired the corroded connectors.

Cost: $650 (parts: BCM - $500, Labor - $150)

Result: All systems functioned correctly post-repair, and the customer reported no further issues.

Case Study 2: 2017 Ford Fusion Wiring Repair

Vehicle: 2017 Ford Fusion, 30,000 miles

Problem: Driver experienced intermittent failures with dashboard indicators and interior lights.

Diagnosis: Diagnostic scan showed U0B59. Inspection revealed loose wiring connections near the BCM.

Solution: Repaired the wiring connections and secured all connectors.

Cost: $200 (parts: Electrical Connectors - $50, Labor - $150)

Result: The vehicle operated normally post-repair, with all indicators functioning as expected.

Diagnose U0B59

Use GeekOBD APP for professional diagnosis!

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  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: U0B59
System: Network (Communication, CAN Bus)
Severity: HIGH
Category: Network Codes