B04CE - Understanding the B04CE Code in 2015-2018 Honda Accord and Other Models

Quick Answer

B04CE means: The B04CE code indicates a malfunction in the Body Control Module related to rear parking assist.

Fix: Check and replace faulty components Cost: $100 - $250 Time: 90-180 minutes

Can I drive with B04CE? It's advisable to address this code soon to avoid parking issues.

Common Questions

What does B04CE mean and how does it affect my car?

The B04CE code indicates a malfunction in your vehicle's Body Control Module, particularly affecting the rear parking assist system. This can lead to difficulties in parking, and potentially increase the risk of minor accidents if not addressed.

What are the most common causes of B04CE and how much does it cost to fix?

Common causes include faulty parking sensors and communication errors within the BCM, with repair costs ranging from $100 to $250 for sensor replacement. Wiring repairs can cost between $75 and $200.

Can I drive my car with B04CE or should I stop immediately?

While it's not an immediate safety hazard, it is advisable to address the B04CE code soon to avoid complications with parking and potential accidents in the future.

How can I diagnose B04CE myself using GeekOBD APP?

You can use the GeekOBD APP to perform a scan on your vehicle's OBD2 system. Look for the B04CE code and check any freeze frame data to understand when the issue occurred. This can guide you in identifying whether a sensor or wiring issue is present.

What vehicles are most commonly affected by B04CE?

The B04CE code is frequently seen in 2015-2018 Honda Accord models, but can also affect other vehicles equipped with similar parking assist systems.

How can I prevent B04CE from happening again?

Regular maintenance of your vehicle's electrical systems, including cleaning connectors and checking for corrosion, can help prevent the recurrence of the B04CE code.

What is B04CE?

The B04CE diagnostic trouble code indicates an issue related to the Body Control Module (BCM) in your vehicle, specifically concerning the rear parking assist system. When this code is triggered, it typically means that there's a malfunction in one of the sensors or a communication issue between the BCM and the parking assist sensors. This can lead to various issues such as the parking sensors not functioning effectively, which can affect your ability to park safely. The Body Control Module is crucial as it manages a variety of functions, including lighting, door locks, and, as in this case, the parking assist system. If left unaddressed, you might experience difficulties with parking, increased chances of minor accidents, and the frustration of warning lights illuminating on your dashboard. For owners of vehicles like the 2015-2018 Honda Accord, it's essential to understand that this code can lead to more severe electrical issues if not diagnosed and repaired promptly. Taking your vehicle to a qualified technician who can perform an accurate diagnosis is vital for ensuring your safety and the longevity of your vehicle's systems.

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

Symptoms

Common symptoms when B04CE is present:

  • The check engine light illuminates continuously, indicating a potential issue with the parking assist system.
  • You might notice that the parking sensors do not beep or provide warnings when obstacles are nearby, making parking more challenging.
  • Fuel economy may decrease slightly as the vehicle's systems struggle to communicate properly, which can lead to increased engine load.
  • The rearview camera may malfunction or not display correctly, affecting your ability to see behind your vehicle.
  • In some cases, other unrelated electrical issues might arise, such as door locks not working correctly.

Possible Causes

Most common causes of B04CE (ordered by frequency):

  1. The most common cause of the B04CE code is a faulty parking assist sensor, occurring in about 50% of cases. These sensors can become damaged due to water intrusion or road debris.
  2. Another frequent issue is a communication error within the Body Control Module, which can be due to corroded wiring or loose connectors, accounting for roughly 30% of diagnoses.
  3. Wiring issues can often be identified through visual inspection and can prevent the BCM from receiving signals from the parking sensors. Keeping the wiring clean and secure can help prevent this.
  4. Less common but significant causes include a failing Body Control Module itself, which could lead to multiple system failures if not repaired, though it represents about 10% of cases.
  5. In rare instances, software glitches within the BCM may require a reprogramming to resolve the issue, though this is less frequently encountered.

B04CE Repair Costs

Cost Breakdown by Repair Type

Sensor Replacement

Replacing the faulty parking assist sensor, which is the most common fix for the B04CE code.

  • Total: $100 - $250
  • Success rate: 85%
Wiring Repair

Repairing or replacing damaged wiring or connectors associated with the Body Control Module.

  • Total: $75 - $200
  • Success rate: 75%
BCM Reprogramming

Reprogramming the Body Control Module to resolve software issues.

  • Total: $50 - $150
  • Success rate: 60%
Money-Saving Tips for B04CE
  • 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 B04CE Diagnosis Process

Follow these systematic steps to accurately diagnose B04CE. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Inspect the vehicle's wiring and connectors for visible damage or corrosion related to the parking assist system (5-10 minutes)

Step 1: Initial visual inspection - Inspect the vehicle's wiring and connectors for visible damage or corrosion related to the parking assist system (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 GeekOBD app to retrieve diagnostic codes and freeze frame data, which can provide context on when the fault occurred (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Use the GeekOBD app to retrieve diagnostic codes and freeze frame data, which can provide context on when the fault occurred (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 - Test the parking assist sensors with a multimeter to check for proper function and resistance (20-30 minutes)

Step 3: Component testing - Test the parking assist sensors with a multimeter to check for proper function and resistance (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 - After any repairs, confirm the correct operation of the parking assist system and clear the codes using the GeekOBD app (10-15 minutes)

Step 4: System function test - After any repairs, confirm the correct operation of the parking assist system and clear the 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 ensure that the parking assist system operates correctly and no additional codes are present (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to ensure that the parking assist system operates correctly and no additional codes are present (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: 2017 Honda Accord Parking Assist Repair

Vehicle: 2017 Honda Accord, 50,000 miles

Problem: Customer noticed the parking assist sensors were not beeping when reversing.

Diagnosis: A scan revealed the B04CE code, and inspection showed a damaged parking assist sensor.

Solution: Replaced the faulty parking assist sensor and cleared the code.

Cost: $150 (sensor and labor)

Result: The parking assist system functioned perfectly after the repair.

Case Study 2: 2016 Toyota Camry BCM Issue

Vehicle: 2016 Toyota Camry, 75,000 miles

Problem: Customer reported intermittent parking assist failures.

Diagnosis: B04CE was present; further testing indicated corroded wiring to the BCM.

Solution: Repaired the wiring and resecured connections.

Cost: $120 (wiring and labor)

Result: Parking assist system returned to normal operation.

Diagnose B04CE

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: B04CE
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: MEDIUM
Category: Body Codes