U0A37 - Understanding DTC U0A37: Common Issues in 2016-2020 Ford F-150 and Other Models

Quick Answer

U0A37 means: The U0A37 code indicates a communication issue with the battery energy control module.

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

Can I drive with U0A37? Immediate attention is recommended to avoid further electrical issues.

Common Questions

What does U0A37 mean and how does it affect my car?

The U0A37 code signifies a communication breakdown with your battery energy control module, which can lead to a range of electrical issues. If not addressed, it can impact your vehicle's performance and reliability, especially if you rely on electronic features.

What are the most common causes of U0A37 and how much does it cost to fix?

Common causes include a faulty BECM, damaged wiring, and low battery voltage. Repair costs for a BECM replacement can range from $300 to $800, while wiring repairs may only cost between $100 and $300.

Can I drive my car with U0A37 or should I stop immediately?

While you may be able to drive your car with the U0A37 code, it is not advisable. Ignoring the warning can lead to further electrical problems, decreased vehicle performance, and increased repair costs down the line.

How can I diagnose U0A37 myself using GeekOBD APP?

To diagnose U0A37, connect the GeekOBD APP to your car's OBD2 port. Use the app to scan for diagnostic trouble codes, check battery voltage, and review freeze frame data for context on when the code occurred.

What vehicles are most commonly affected by U0A37?

U0A37 is often seen in 2016-2020 Ford F-150 models and other vehicles equipped with advanced battery management systems. Always check for any recalls or technical service bulletins specific to your vehicle.

How can I prevent U0A37 from happening again?

To prevent a recurrence of the U0A37 code, ensure regular maintenance of your vehicle's electrical systems, including battery checks, inspections of wiring, and timely software updates at your dealership.

What is U0A37?

The DTC U0A37 code is a communication error indicating that there is an issue with the vehicle's battery energy control module (BECM) or its connection with other modules. This code typically arises in vehicles equipped with advanced energy management systems. In simpler terms, it signals a disruption in how the vehicle manages and communicates power from the battery, affecting various systems. This could lead to problems such as reduced power efficiency, potential failures in electrical components, and even diminished performance of essential systems like the engine and transmission. If ignored, it can result in more severe electrical issues and higher repair costs. Symptoms may include warning lights on the dashboard, unusual battery drain, or issues related to electronic features like power windows or stability control. Drivers of vehicles such as the 2016-2020 Ford F-150 may notice that their vehicle’s performance fluctuates, especially under heavy electrical load, indicating that the BECM is struggling to maintain proper communication. Regular diagnostic checks using tools like the GeekOBD APP can help diagnose the issue early and prevent further complications.

System: U - Network (Communication, CAN Bus)

Symptoms

Common symptoms when U0A37 is present:

  • Check engine light stays on constantly, indicating a persistent issue with battery communication.
  • Unusual battery drain experienced, especially when the vehicle is not in use, suggesting that some systems may be drawing power incorrectly.
  • Electronic stability control warning lights may flash intermittently, pointing to issues with module communication.
  • Power accessories like windows or seats may function erratically, leading to a frustrating driving experience.
  • Engine performance may fluctuate under heavy electrical load, especially during acceleration or when using multiple electronic features.

Possible Causes

Most common causes of U0A37 (ordered by frequency):

  1. The most common cause of the U0A37 code is a faulty battery energy control module (BECM), which has a likelihood of around 50%. This can occur due to internal failures or software glitches.
  2. A second cause could be damaged or corroded wiring harnesses connected to the BECM. This can lead to intermittent communication errors, with about a 30% likelihood.
  3. A third cause might be a low battery voltage or failing battery, which can cause the module to receive inadequate power and fail to communicate. Regular battery maintenance can prevent this.
  4. Less commonly, a software issue within the vehicle’s system could cause this code, necessitating a software update from a dealer or qualified technician.
  5. Rarely, complete failure of the vehicle’s communication network due to a failed central control module can trigger the U0A37 code, requiring extensive diagnostics.

U0A37 Repair Costs

Cost Breakdown by Repair Type

BECM Replacement

Replacing the faulty Battery Energy Control Module with a new unit.

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

Repairing or replacing damaged wiring connected to the BECM.

  • Total: $100 - $300
  • Success rate: 75%
Software Update

Updating the vehicle's software to resolve potential communication issues.

  • Total: $50 - $150
  • Success rate: 70%
Money-Saving Tips for U0A37
  • 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 U0A37 Diagnosis Process

Follow these systematic steps to accurately diagnose U0A37. 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 like the BECM and wiring (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components like the BECM and wiring (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 to ensure the issue is resolved (10-15 minutes)

Step 4: System function test - Verify proper operation after repairs and clear codes to ensure the issue is resolved (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 monitor for any returning symptoms (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and monitor for any returning symptoms (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: BECM Replacement on 2018 Ford F-150

Vehicle: 2018 Ford F-150, 45,000 miles

Problem: Customer reported the check engine light and intermittent battery drain.

Diagnosis: Using the GeekOBD APP, the U0A37 code was confirmed along with low battery voltage readings.

Solution: Replaced the Battery Energy Control Module and performed a system reset.

Cost: $750 (including parts and labor)

Result: Post-repair, the vehicle operated normally, and the check engine light did not return.

Case Study 2: Wiring Repair on 2019 Ford Explorer

Vehicle: 2019 Ford Explorer, 30,000 miles

Problem: Customer experienced erratic operation of power windows and dashboard warning lights.

Diagnosis: Inspection revealed corroded wiring connected to the battery energy control module, triggering the U0A37 code.

Solution: Repaired the damaged wiring and ensured all connections were secure.

Cost: $150 (repair labor included)

Result: The vehicle's electrical systems functioned properly after repair, with no further issues.

Diagnose U0A37

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: U0A37
System: Network (Communication, CAN Bus)
Severity: HIGH
Category: Network Codes