B201E - Understanding DTC B201E: Common in 2015-2018 Honda Accord and Other Models

Quick Answer

B201E means: DTC B201E signals a malfunction in the driver's door module or its communication system.

Fix: Check and replace faulty components Cost: $150 - $400 Time: 90-180 minutes

Can I drive with B201E? While it's not an immediate safety issue, addressing it quickly is advisable to avoid further complications.

Common Questions

What does B201E mean and how does it affect my car?

The B201E code indicates that there's an issue with the driver's door module or its communication system. This can affect the operation of your power windows, locks, and mirrors, potentially leaving your vehicle vulnerable or causing inconvenience. If left unresolved, it may lead to more significant electrical problems.

What are the most common causes of B201E and how much does it cost to fix?

Common causes of the B201E code include a faulty driver's door module (60% likelihood), damaged wiring (20%), or a blown fuse (15%). Repair costs can vary from $10 for a fuse replacement to $400 for a module replacement, depending on the issue.

Can I drive my car with B201E or should I stop immediately?

While the B201E code does not indicate an immediate safety hazard, it is advisable to address the issue promptly. Continuing to drive may lead to further electrical malfunctions and more expensive repairs down the line.

How can I diagnose B201E myself using GeekOBD APP?

To diagnose B201E using the GeekOBD APP, connect the device to your car's OBD2 port, run the scan to retrieve codes, and review the freeze frame data for context on the issue. This can help pinpoint whether the problem lies within the driver's door module or related components.

What vehicles are most commonly affected by B201E?

Vehicles like the 2015-2018 Honda Accord, 2017-2020 Toyota Camry, and various models from Ford and Chevrolet are commonly affected by the B201E code. It's essential to check for any recalls or Technical Service Bulletins (TSBs) related to your specific model.

How can I prevent B201E from happening again?

To prevent the B201E code from recurring, ensure regular maintenance of your vehicle's electrical systems. Check the door wiring and connectors periodically for wear or corrosion and keep moisture exposure to a minimum. Using the GeekOBD APP for routine scans can also help catch issues early.

What is B201E?

The DTC B201E code is a diagnostic trouble code that indicates a problem with the driver's door module or the communication between the module and other systems within the vehicle. This code is particularly common in vehicles like the 2015-2018 Honda Accord, but can also appear in various other makes and models. When the B201E code is triggered, it typically means that there is a malfunction in the electrical components that control the driver's door functions, which may include power windows, locks, and mirrors. This can lead to symptoms such as the inability to operate the windows or locks from the driver's side, or even issues with the vehicle's alarm system. The implications of ignoring this code can lead to further electrical problems, increased repair costs, and in some cases, safety concerns if the door fails to secure properly. It's essential to address this issue promptly to avoid potential complications. Additionally, regular diagnostic checks using tools like the GeekOBD APP can help in monitoring your vehicle's health and catching issues before they escalate.

System: B - Body (Airbags, Lighting, Security, Climate Control)

Symptoms

Common symptoms when B201E is present:

  • The driver's side power window does not respond when the switch is pressed.
  • Locks on the driver's side door fail to operate, making it difficult to secure the vehicle.
  • The alarm system may trigger unexpectedly or fail to activate properly.
  • Dashboard warning lights may illuminate, indicating electrical issues.
  • Intermittent functionality of the driver's side mirror adjustments.

Possible Causes

Most common causes of B201E (ordered by frequency):

  1. The most common cause of the B201E code is a faulty driver's door module, occurring in approximately 60% of cases. This could be due to wear and tear or water intrusion.
  2. Another frequent culprit is damaged wiring or loose connections in the door harness, which can disrupt communication between the door module and the vehicle's computer system.
  3. A third cause may involve a blown fuse related to the door's electrical systems, which can be easily checked and replaced if necessary.
  4. Less common but serious is the complete failure of the Body Control Module (BCM), which can lead to multiple electrical issues throughout the vehicle.
  5. In rare cases, software glitches in the vehicle's control systems can trigger the B201E code, necessitating a software update or reset.

B201E Repair Costs

Cost Breakdown by Repair Type

Driver's Door Module Replacement

Replacing the faulty driver's door module that controls the power windows and locks.

  • Total: $150 - $400
  • Success rate: 85%
Wiring Repair

Repairing damaged wiring or loose connections within the door harness.

  • Total: $50 - $150
  • Success rate: 90%
Fuse Replacement

Replacing a blown fuse related to the driver's door functions.

  • Total: $10 - $30
  • Success rate: 95%
Money-Saving Tips for B201E
  • 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 B201E Diagnosis Process

Follow these systematic steps to accurately diagnose B201E. 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 in the door harness (5-10 minutes)

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion in the door harness (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 - Use the app to retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Use the app to 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 the driver's door module and related components (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the driver's door module and related 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 using the GeekOBD APP (10-15 minutes)

Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP (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 all systems are functioning (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure all systems are functioning (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: Driver's Door Module Replacement on 2016 Honda Accord

Vehicle: 2016 Honda Accord, 75,000 miles

Problem: Customer reported that the driver's side window and door locks were non-functional.

Diagnosis: Using the GeekOBD APP, the B201E code was retrieved, indicating a fault in the driver's door module. A visual inspection revealed damaged wiring.

Solution: Replaced the driver's door module and repaired the wiring harness. All functions were restored.

Cost: $350 (part: $300, labor: $50)

Result: Customer reported satisfaction with the repair; all door functions worked correctly after service.

Case Study 2: Wiring Repair on 2017 Toyota Camry

Vehicle: 2017 Toyota Camry, 50,000 miles

Problem: Driver's side door locks intermittently failed to respond.

Diagnosis: B201E code confirmed using the app; inspection revealed a loose connection in the wiring harness.

Solution: Secured the loose connection and tested the system. The locks were fully functional afterward.

Cost: $80 (part: $0, labor: $80)

Result: The issue was resolved, and no further problems were reported.

Diagnose B201E

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: B201E
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: MEDIUM
Category: Body Codes