B0247 - Understanding the Invalid Data from the Battery Voltage Sensor in 2015-2018 Honda Accord

Quick Answer

B0247 means: DTC B0247 indicates an invalid reading from the battery voltage sensor.

Fix: Check and replace faulty components Cost: $150 - $250 Time: 90-180 minutes

Can I drive with B0247? Immediate attention is recommended to prevent further electrical issues.

Common Questions

What does B0247 mean and how does it affect my car?

DTC B0247 indicates an issue with the battery voltage sensor circuit, leading to incorrect voltage readings. This can affect your vehicle's performance, causing symptoms like poor acceleration and reduced fuel efficiency.

What are the most common causes of B0247 and how much does it cost to fix?

Common causes include a faulty battery voltage sensor and damaged wiring. Repair costs typically range from $150 to $250 for sensor replacement.

Can I drive my car with B0247 or should I stop immediately?

It's advisable to address the B0247 code promptly, as ignoring it can lead to further electrical issues and reduced performance. If you experience significant symptoms, consider stopping for inspection.

How can I diagnose B0247 myself using GeekOBD APP?

Using the GeekOBD APP, conduct a full OBD2 scan to identify trouble codes. Pay attention to freeze frame data to see when the error occurred, and check voltage readings against specifications.

What vehicles are most commonly affected by B0247?

DTC B0247 is often seen in 2015-2018 Honda Accord models, particularly those with battery-related issues. Checking for recalls or Technical Service Bulletins (TSBs) related to battery sensors can be insightful.

How can I prevent B0247 from happening again?

Regular maintenance checks, including inspecting battery connections and sensors, can help prevent reoccurrence. Keeping the battery terminals clean and ensuring secure connections is also essential.

What is B0247?

DTC B0247 refers to a fault in the battery voltage sensor circuit, typically indicating that the data being provided to the engine control unit (ECU) is invalid. This trouble code is particularly common in vehicles like the 2015-2018 Honda Accord. In simple terms, it means that the vehicle's computer is receiving incorrect voltage readings from the battery, which can lead to various performance issues. When the battery voltage sensor fails or malfunctions, it can cause the check engine light to illuminate, impacting the vehicle's overall performance and efficiency. Over time, this may lead to additional issues such as poor engine performance, reduced fuel economy, and even problems with starting the vehicle. If left unaddressed, the fault may result in further electrical problems, causing more extensive repairs down the line. Understanding this code and addressing it promptly is crucial for maintaining the health of your vehicle.

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

Symptoms

Common symptoms when B0247 is present:

  • Check engine light stays on constantly, indicating an underlying issue that requires attention.
  • Noticeable decrease in engine performance, such as stalling or hesitation during acceleration.
  • Fuel economy may decrease significantly, leading to additional costs at the pump, potentially by 10-15%.
  • Electrical accessories may not function properly, such as dimming headlights or malfunctioning radio.
  • Difficulty starting the vehicle, which may indicate that the battery is not receiving the correct voltage.

Possible Causes

Most common causes of B0247 (ordered by frequency):

  1. The most common cause of DTC B0247 is a faulty battery voltage sensor, which has a likelihood of about 60%. This sensor may fail due to wear and tear over time.
  2. Another likely cause is corroded or damaged wiring in the battery sensor circuit. This can disrupt the signals sent to the ECU.
  3. Loose or poor connections at the battery terminals can also lead to erroneous readings, making it crucial to ensure all connections are secure.
  4. Less common but serious causes include a failing ECU that misinterprets sensor data, which may require more extensive diagnostics.
  5. In rare cases, issues within the battery itself, such as internal faults, may also trigger this code.

B0247 Repair Costs

Cost Breakdown by Repair Type

Battery Voltage Sensor Replacement

Replacing the faulty battery voltage sensor to restore accurate readings.

  • Total: $150 - $250
  • Success rate: 90%
Wiring Repair

Repairing corroded or damaged wiring in the battery sensor circuit.

  • Total: $100 - $200
  • Success rate: 85%
Money-Saving Tips for B0247
  • 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 B0247 Diagnosis Process

Follow these systematic steps to accurately diagnose B0247. 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 to check the voltage output from the battery voltage sensor (20-30 minutes)

Step 3: Component testing - Use a multimeter to check the voltage output from the battery voltage sensor (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 making repairs, verify proper operation by clearing codes and checking voltage readings again (10-15 minutes)

Step 4: System function test - After making repairs, verify proper operation by clearing codes and checking voltage readings again (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 that the issue has been resolved (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm that the issue has been resolved (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: Battery Voltage Sensor Replacement on a 2016 Honda Accord

Vehicle: 2016 Honda Accord, 65,000 miles

Problem: Customer reported check engine light on and poor acceleration.

Diagnosis: Diagnostic scan revealed DTC B0247. Visual inspection found corroded battery terminals.

Solution: Replaced the battery voltage sensor and cleaned the battery terminals.

Cost: $220 (Sensor: $150, Labor: $70)

Result: Check engine light cleared, and performance improved significantly.

Case Study 2: Wiring Repair on a 2017 Honda Accord

Vehicle: 2017 Honda Accord, 70,000 miles

Problem: Vehicle experienced starting issues and check engine light illumination.

Diagnosis: DTC B0247 confirmed; wiring harness showed signs of corrosion.

Solution: Repaired wiring connections and replaced the damaged section.

Cost: $180 (Labor: $80, Wiring: $100)

Result: Vehicle started reliably, and check engine light remained off after repairs.

Diagnose B0247

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: B0247
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: HIGH
Category: Body Codes