U0248 - Understanding DTC U0248: Common Causes and Solutions for 2015-2018 Honda Accord and More

Quick Answer

U0248 means: DTC U0248 indicates a communication failure between the Engine Control Module and the Body Control Module.

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

Can I drive with U0248? Immediate attention is recommended to prevent further electrical issues.

Common Questions

What does U0248 mean and how does it affect my car?

DTC U0248 signifies a disruption in communication between your vehicle's Engine Control Module and Body Control Module. This can lead to various issues such as malfunctioning lights, door locks, and even affect your car's safety systems. Ignoring this code can result in more significant problems down the line, so it's important to address it promptly.

What are the most common causes of U0248 and how much does it cost to fix?

Common causes of U0248 include a faulty Body Control Module, damaged wiring, and corrosion at connections. Repair costs can vary significantly, ranging from $100 for simple wiring repairs to $800 for a complete BCM replacement, depending on the issue's complexity and the vehicle's make and model.

Can I drive my car with U0248 or should I stop immediately?

While you may be able to drive short distances with DTC U0248, it's not advisable. The code indicates potential issues with critical systems that could lead to unsafe driving conditions. It's best to have your vehicle diagnosed and repaired as soon as possible.

How can I diagnose U0248 myself using GeekOBD APP?

Using the GeekOBD APP, you can scan your vehicle for diagnostic trouble codes, including U0248. Start by connecting the app to your OBD2 port, then check for current and pending codes. Look for freeze frame data to understand when the issue occurred, and inspect any related components based on the information provided by the app.

What vehicles are most commonly affected by U0248?

DTC U0248 is often found in models like the 2015-2018 Honda Accord, 2013-2017 Ford Fusion, and several Chrysler models from 2014-2018. It's essential to check for any recalls or Technical Service Bulletins (TSBs) related to electrical issues in your specific vehicle.

How can I prevent U0248 from happening again?

To prevent U0248 from recurring, ensure regular maintenance checks on your vehicle’s electrical systems. Inspect wiring and connectors for wear and corrosion, and keep the software of your control modules updated. Additionally, avoid exposing your vehicle to extreme weather conditions, which can exacerbate electrical issues.

What is U0248?

DTC U0248 is a diagnostic trouble code that indicates a communication issue between the vehicle's control modules, specifically relating to the 'Lost Communication with the Body Control Module.' This code often arises in vehicles like the 2015-2018 Honda Accord, where various systems rely on smooth communication for optimal performance. When this code is triggered, it means that the Engine Control Module (ECM) is unable to communicate with the Body Control Module (BCM), leading to potential malfunctions in multiple systems, including lighting, locking, and even safety features. In practical terms, this may cause your car to exhibit symptoms like erratic lighting, issues with door locks, or even an unresponsive infotainment system. It’s crucial to address this issue promptly, as prolonged communication failures can lead to more severe electrical problems and affect the overall reliability of your vehicle. Understanding DTC U0248 helps you recognize the importance of maintaining good communication within your car’s electronic structure, which is vital for functionality and safety.

System: U - Network (Communication, CAN Bus)

Symptoms

Common symptoms when U0248 is present:

  • Check engine light stays on constantly, indicating an ongoing issue with vehicle systems.
  • Power door locks may fail to operate correctly, causing inconvenience when entering or exiting the vehicle.
  • Erratic lighting behavior, such as headlights flickering or dashboard lights malfunctioning, can occur.
  • Infotainment system may become unresponsive or experience frequent resets, affecting entertainment and navigation.
  • Battery drain issues may arise due to continuous signals being sent without proper communication.

Possible Causes

Most common causes of U0248 (ordered by frequency):

  1. The most common cause is a faulty Body Control Module, which is often responsible for various electrical functions. This accounts for about 60% of U0248 cases.
  2. A second cause could be damaged wiring or connectors between the ECM and BCM, which may lead to poor communication signals.
  3. Corrosion on connectors and terminals can also trigger U0248, making regular inspections and cleaning essential for prevention.
  4. Less common but serious issues include software glitches in the control modules that may require a software update from a dealership.
  5. A rare cause could be an internal failure within the Engine Control Module, which is less frequent and usually more costly to repair.

U0248 Repair Costs

Cost Breakdown by Repair Type

Body Control Module Replacement

Replacing the faulty Body Control Module can resolve U0248 issues.

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

Repairing damaged wiring can improve communication between the ECM and BCM.

  • Total: $100 - $300
  • Success rate: 70%
Software Update

Updating the software in the control modules may solve communication problems.

  • Total: $50 - $150
  • Success rate: 60%
Money-Saving Tips for U0248
  • 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 U0248 Diagnosis Process

Follow these systematic steps to accurately diagnose U0248. 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 BCM and wiring (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components like the BCM 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 check for reoccurring codes (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and check for reoccurring codes (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: Body Control Module Replacement for a 2016 Honda Accord

Vehicle: 2016 Honda Accord, 75,000 miles

Problem: Customer reported that the dashboard lights flickered and the power door locks were unresponsive.

Diagnosis: After running a diagnostic with the GeekOBD APP, DTC U0248 was confirmed. Visual inspections revealed a faulty BCM.

Solution: Replaced the Body Control Module and ensured all connections were secure.

Cost: $600 (includes part and labor)

Result: Post-repair, all electrical systems functioned properly, and no codes reappeared.

Case Study 2: Wiring Repair on a 2017 Ford Fusion

Vehicle: 2017 Ford Fusion, 50,000 miles

Problem: Owner experienced intermittent power lock failures and dashboard light issues.

Diagnosis: Diagnostic scan revealed U0248. Inspection showed frayed wiring near the BCM.

Solution: Repaired the damaged wiring and resecured all connectors.

Cost: $150 (for repairs and diagnostics)

Result: The vehicle was returned in good working order without any further issues.

Diagnose U0248

Use GeekOBD APP for professional diagnosis!

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  • Professional-grade analysis
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Code Information

Code: U0248
System: Network (Communication, CAN Bus)
Severity: HIGH
Category: Network Codes