U0F37 - Understanding the Communication Error in 2016-2020 Ford Explorer and Other Models

Quick Answer

U0F37 means: U0F37 is a communication error indicating a problem in the vehicle's network, often related to the body control module.

Fix: Check and replace faulty components Cost: $300 - $800 Time: 90-180 minutes

Can I drive with U0F37? It's important to address this code promptly to avoid further electrical issues.

Common Questions

What does U0F37 mean and how does it affect my car?

The U0F37 code indicates a communication breakdown in your vehicle's electronic systems, primarily involving the body control module. This can lead to malfunctioning power accessories, erratic dashboard lights, or even security system issues. If left unresolved, it may cause further electrical problems, impacting your vehicle's overall reliability.

What are the most common causes of U0F37 and how much does it cost to fix?

The most common cause of U0F37 is a faulty body control module, which can cost between $300 and $800 to replace. Other causes include corroded wiring, which might cost $100 - $300 to repair, and software issues that could require a reprogramming for $50 - $150.

Can I drive my car with U0F37 or should I stop immediately?

It's advisable to avoid driving your car extensively with the U0F37 code present. While it may still be operational, you risk further damage to the electrical systems and could lose critical functions unexpectedly.

How can I diagnose U0F37 myself using GeekOBD APP?

To diagnose U0F37 with the GeekOBD APP, start by connecting the app to your vehicle's OBD2 port. Scan for all trouble codes and view freeze frame data to understand when the error occurred. Pay attention to any related codes that might give more context to the issue.

What vehicles are most commonly affected by U0F37?

U0F37 is commonly reported in models like the 2016-2020 Ford Explorer, as well as other Ford vehicles from the same production period. Always check for any manufacturer recalls or technical service bulletins (TSBs) related to electrical systems.

How can I prevent U0F37 from happening again?

To prevent the U0F37 code, perform regular vehicle maintenance, including inspecting wiring and connectors for wear and corrosion. Additionally, ensure software updates are applied when recommended by your vehicle manufacturer.

What is U0F37?

The DTC U0F37 code is a communication error that indicates a malfunction within the vehicle’s network, specifically related to the body control module (BCM) or the communication lines between various control modules. This code can appear in various models, notably the 2016-2020 Ford Explorer and similar vehicles from the Ford lineup. A vehicle’s numerous electronic systems rely heavily on seamless communication to function properly, and any disruption can lead to various performance issues. When U0F37 is triggered, it suggests that the BCM is not receiving or sending signals correctly, leading to potential malfunctions in features like lighting, power windows, or even the vehicle's security systems. Drivers may experience symptoms ranging from a simple check engine light to more severe issues like failure of power accessories. Ignoring this code can lead to further complications, including reduced vehicle reliability and safety concerns. Therefore, immediate diagnosis and repair are crucial to maintaining the functionality of your vehicle's systems.

System: U - Network (Communication, CAN Bus)

Symptoms

Common symptoms when U0F37 is present:

  • The check engine light illuminates or blinks intermittently, signaling a potential underlying issue.
  • Power windows may operate erratically, becoming unresponsive or slow, impacting usability.
  • The vehicle's security system may activate unexpectedly, causing alarm triggers without cause.
  • Dashboard warning lights may appear and disappear sporadically, leading to confusion and concern.
  • In some cases, all electronic accessories may fail to operate, leaving the driver without critical functions.

Possible Causes

Most common causes of U0F37 (ordered by frequency):

  1. The most common cause of the U0F37 code is a faulty body control module (BCM), with a likelihood of around 60%. This can happen due to internal faults or water intrusion.
  2. Poor wiring or corroded connectors between the BCM and other control modules can lead to communication failures, which is the second most common cause at about 25%. Regular inspections can help prevent this.
  3. A blown fuse related to the BCM circuit can trigger this code, albeit less frequently. Checking fuses should be part of routine maintenance.
  4. Less common but serious causes include software glitches in the BCM, which might require a software update or reprogramming by a dealer.
  5. In rare cases, complete failure of the communication bus system might occur, affecting multiple modules and requiring extensive repairs.

U0F37 Repair Costs

Cost Breakdown by Repair Type

BCM Replacement

Replacing the body control module if it is found to be faulty.

  • Total: $300 - $800
  • Success rate: 85%
Wiring Repair

Repairing or replacing damaged wiring or connectors.

  • Total: $100 - $300
  • Success rate: 90%
Software Update

Reprogramming the existing BCM with updated software.

  • Total: $50 - $150
  • Success rate: 75%
Money-Saving Tips for U0F37
  • 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 U0F37 Diagnosis Process

Follow these systematic steps to accurately diagnose U0F37. 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). Look for any physical damage around the BCM and connectors.

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). Use the GeekOBD APP to get a clear picture of the vehicle’s health.

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, especially the BCM and its connections (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components, especially the BCM and its connections (20-30 minutes). Ensure continuity and proper voltage levels.

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 - After repairs, verify the proper operation of electronic components and clear codes (10-15 minutes)

Step 4: System function test - After repairs, verify the proper operation of electronic components and clear codes (10-15 minutes). Check if any related systems are still malfunctioning.

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 the repair success and ensure no new codes appear (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm the 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: BCM Replacement on a 2017 Ford Explorer

Vehicle: 2017 Ford Explorer, 65,000 miles

Problem: Customer reported intermittent power window failures and dashboard warning lights.

Diagnosis: Scanning with the GeekOBD APP revealed U0F37 and other communication codes. Visual inspection showed corrosion around the BCM connections.

Solution: Replaced the body control module and cleaned all connections.

Cost: $650 (parts: BCM $500, labor $150)

Result: After the repair, all electrical functions returned to normal. Follow-up showed no reoccurrence of the U0F37 code.

Case Study 2: Wiring Repair on a 2018 Ford Explorer

Vehicle: 2018 Ford Explorer, 45,000 miles

Problem: Vehicle experienced random security alarms and inconsistent lighting.

Diagnosis: GeekOBD APP showed U0F37; a visual inspection indicated damaged wiring near the BCM.

Solution: Repaired the damaged wiring and replaced corroded connectors.

Cost: $200 (parts: wiring $50, connectors $30, labor $120)

Result: The issues resolved, and the vehicle's systems operated without further problems.

Diagnose U0F37

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: U0F37
System: Network (Communication, CAN Bus)
Severity: HIGH
Category: Network Codes