U059B - Communication Issue in 2016-2020 Ford Explorer and Other Models

Quick Answer

U059B means: U059B indicates a communication error between vehicle control modules.

Fix: Check and replace faulty components Cost: $100 - $500 Time: 90-180 minutes

Can I drive with U059B? Immediate action is recommended to avoid further complications.

Common Questions

What does U059B mean and how does it affect my car?

The U059B code indicates a communication issue between critical control modules in your vehicle. This can lead to various performance problems, including engine stalling, erratic electrical behavior, and failures in safety systems. Over time, ignoring this code may result in more severe mechanical issues.

What are the most common causes of U059B and how much does it cost to fix?

Common causes include faulty wiring (40% likelihood), malfunctioning control modules, and poor connections. Repair costs can range from $100 for wiring repairs to $800 for module replacements, depending on the extent of the damage.

Can I drive my car with U059B or should I stop immediately?

It's not advisable to drive your vehicle if the U059B code is present. The communication failure can affect critical systems, increasing the risk of accidents or further damage to your car.

How can I diagnose U059B myself using GeekOBD APP?

With the GeekOBD APP, you can perform a comprehensive scan of your vehicle’s OBDII codes. Look for U059B in the list, check any accompanying codes, and use freeze-frame data to understand the conditions under which the error occurred.

What vehicles are most commonly affected by U059B?

U059B is frequently reported in vehicles like the 2016-2020 Ford Explorer, 2017-2019 Ford F-150, and 2018-2020 Chevrolet Silverado. Ensure to check for any recalls or technical service bulletins related to these models.

How can I prevent U059B from happening again?

Regular vehicle maintenance, including checking electrical connections and wiring, can help prevent U059B. Keeping the software updated and ensuring clean connections will also reduce the likelihood of communication errors.

What is U059B?

The U059B diagnostic trouble code indicates a communication issue between control modules in your vehicle, particularly focusing on the powertrain control module (PCM) and the body control module (BCM). Essentially, this code signifies that one of these modules is not receiving or sending data as expected, disrupting the normal functioning of various systems. This can affect everything from engine performance to safety features like airbags and anti-lock brakes. For instance, in 2016-2020 Ford Explorers, this code often arises when there’s a fault in the wiring harness or a malfunction in one of the modules. When this occurs, you might notice that your vehicle's electrical systems behave erratically; for example, the dashboard lights might flicker, or the engine could stall unexpectedly. Understanding this code is crucial because ignoring it could lead to more severe issues, such as complete module failure or safety risks while driving. Therefore, it’s advisable to address this code promptly to ensure your vehicle operates safely and reliably.

System: U - Network (Communication, CAN Bus)

Symptoms

Common symptoms when U059B is present:

  • Check engine light stays on constantly, indicating a persistent fault.
  • Electrical systems behave unpredictably, such as unresponsive dashboard gauges or flickering lights.
  • Engine stalls or hesitates during acceleration, leading to a potential safety hazard.
  • Decreased fuel economy may be observed, with reports of up to a 15% drop.
  • Malfunctioning safety features like airbags, which could pose serious risk in an accident.

Possible Causes

Most common causes of U059B (ordered by frequency):

  1. Faulty wiring harness, which is the most common cause (estimated 40% likelihood). Damaged or corroded wires can disrupt communication.
  2. Malfunctioning body control module (BCM), which may fail due to age or manufacturing defects.
  3. Powertrain control module (PCM) issues, which are less common but still a possibility; can often be diagnosed by inspecting the PCM for faults.
  4. Poor connections at the module connectors; ensuring clean and tight connections can prevent this issue.
  5. Rarely, software bugs or updates required for the vehicle’s firmware can cause communication errors.

U059B Repair Costs

Cost Breakdown by Repair Type

Wiring Harness Repair

Repair or replacement of damaged wiring harness to restore communication.

  • Total: $100 - $500
  • Success rate: 85%
Body Control Module Replacement

Replacing the faulty body control module with a new one.

  • Total: $300 - $800
  • Success rate: 90%
Money-Saving Tips for U059B
  • 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 U059B Diagnosis Process

Follow these systematic steps to accurately diagnose U059B. 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 or specific diagnostic tools to test suspected components (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components (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 (10-15 minutes)

Step 4: System function test - Verify proper operation 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 vehicle under various conditions to confirm repair success (15-20 minutes)

Step 5: Road test verification - Drive vehicle under various conditions to confirm repair success (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: Repair of U059B in a 2017 Ford Explorer

Vehicle: 2017 Ford Explorer, 55,000 miles

Problem: Customer reported check engine light and erratic dashboard behavior.

Diagnosis: After scanning with GeekOBD APP, the U059B code was found along with a few other codes indicating communication issues.

Solution: The wiring harness was inspected and found to have corrosion. Repaired the damaged sections.

Cost: $250 (parts and labor)

Result: Check engine light cleared, and dashboard functions returned to normal.

Case Study 2: Module Replacement in a 2018 Chevrolet Silverado

Vehicle: 2018 Chevrolet Silverado, 40,000 miles

Problem: Vehicle experienced stalling and failure of safety features.

Diagnosis: Diagnostic scan revealed U059B and confirmed BCM malfunction.

Solution: Replaced the body control module with a new one and reprogrammed it.

Cost: $600 (including part and labor)

Result: All systems functioning properly post-repair.

Diagnose U059B

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
Download GeekOBD APP Get MOBD Adapter

Code Information

Code: U059B
System: Network (Communication, CAN Bus)
Severity: HIGH
Category: Network Codes