B0477 - Steering Wheel Position Sensor Range/Performance Problem in Ford and Honda Models

Quick Answer

B0477 means: B0477 indicates a problem with the steering wheel position sensor's range or performance.

Fix: Check and replace faulty components Cost: $150 - $300 Time: 90-180 minutes

Can I drive with B0477? Immediate attention is recommended to ensure safe vehicle operation.

Common Questions

What does B0477 mean and how does it affect my car?

The B0477 code indicates a problem with the steering wheel position sensor, which is crucial for vehicle handling and stability. If this code appears, it can lead to handling issues and may compromise safety features like electronic stability control.

What are the most common causes of B0477 and how much does it cost to fix?

Common causes include a faulty steering wheel position sensor, poor electrical connections, or software glitches. Repair costs typically range from $150 to $300 for sensor replacement.

Can I drive my car with B0477 or should I stop immediately?

While you might still be able to drive your vehicle, it is not advisable to do so. The steering issues could pose a safety risk. It's best to have the problem diagnosed and repaired as soon as possible.

How can I diagnose B0477 myself using GeekOBD APP?

To diagnose B0477, connect the GeekOBD APP to your vehicle's OBD2 port, scan for codes, and review the freeze frame data. Look for abnormalities in the steering angle readings, which can guide you on the next steps.

What vehicles are most commonly affected by B0477?

Vehicles like the 2013-2018 Ford Fusion and the 2016 Honda Accord are frequently affected by the B0477 code, often due to their reliance on electronic steering systems.

How can I prevent B0477 from happening again?

Regular maintenance checks, including visual inspections of the steering system and ensuring electrical connections are clean and tight, can help prevent B0477 from recurring.

What is B0477?

The diagnostic trouble code B0477 indicates a problem with the steering wheel position sensor's range or performance. This sensor is crucial for various systems within your vehicle, such as electronic stability control and advanced driver-assistance systems (ADAS). When the B0477 code triggers, it typically means the steering wheel position sensor is either failing to provide accurate readings or is outside its operational limits. This can lead to issues like improper handling, increased wear on tires, and even potential safety concerns if left unchecked. Drivers may notice the steering feels loose or unresponsive, and warning lights on the dashboard may illuminate. Commonly affected vehicles include the 2013-2018 Ford Fusion and the 2016 Honda Accord, where the steering position sensor plays a vital role in the overall vehicle dynamics. Ignoring this code can result in more severe steering issues or failure of other related systems, making it essential to address it promptly.

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

Symptoms

Common symptoms when B0477 is present:

  • Check engine light remains illuminated, indicating a fault related to steering sensor performance.
  • Steering feels loose or unresponsive, making it difficult to control the vehicle, especially during turns.
  • Increased tire wear may be noticeable, as the vehicle may not track properly due to sensor inaccuracies.
  • Warning messages on the dashboard related to steering control or stability may appear.
  • Difficulty in engaging certain safety features, such as lane-keeping assist, due to sensor malfunction.

Possible Causes

Most common causes of B0477 (ordered by frequency):

  1. The most common cause of B0477 is a faulty steering wheel position sensor, with a likelihood of around 70%. This sensor may wear out over time or suffer damage from impacts.
  2. A second potential cause could be poor electrical connections, often due to corrosion or loose wiring, affecting the sensor's ability to send accurate signals.
  3. A third cause may involve software issues within the vehicle's control module, which can sometimes be resolved with a simple software update.
  4. Less common but serious causes include physical damage to the steering column or associated components, leading to failure of the sensor.
  5. A rare but possible cause might be interference from aftermarket modifications, such as steering wheel replacements or other electronic installations.

B0477 Repair Costs

Cost Breakdown by Repair Type

Steering Wheel Position Sensor Replacement

Replacing the faulty steering wheel position sensor to restore proper functionality.

  • Total: $150 - $300
  • Success rate: 95%
Wiring Repair

Repairing or replacing damaged wiring or connectors associated with the sensor.

  • Total: $100 - $200
  • Success rate: 90%
ECU Software Update

Updating the vehicle's ECU software to fix potential software-related issues.

  • Total: $50 - $100
  • Success rate: 85%
Money-Saving Tips for B0477
  • 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 B0477 Diagnosis Process

Follow these systematic steps to accurately diagnose B0477. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Begin by checking for any obvious signs of damage around the steering column, such as frayed wires or loose connections

Step 1: Initial visual inspection - Begin by checking for any obvious signs of damage around the steering column, such as frayed wires or loose connections. This should take around 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 all diagnostic trouble codes and freeze frame data, which helps contextualize the fault

Step 2: OBD2 scan with GeekOBD APP - Use the GeekOBD APP to retrieve all diagnostic trouble codes and freeze frame data, which helps contextualize the fault. Expect this to take about 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 - Utilize a multimeter to measure the voltage output of the steering wheel position sensor, confirming whether it falls within the expected range

Step 3: Component testing - Utilize a multimeter to measure the voltage output of the steering wheel position sensor, confirming whether it falls within the expected range. This step may take 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 replacing or repairing any faulty components, verify the operation of the steering system and clear the codes using the GeekOBD APP

Step 4: System function test - After replacing or repairing any faulty components, verify the operation of the steering system and clear the codes using the GeekOBD APP. This could take around 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 - Finally, drive the vehicle under various conditions to ensure the issue is resolved and that all systems are functioning properly, which might take 15-20 minutes

Step 5: Road test verification - Finally, drive the vehicle under various conditions to ensure the issue is resolved and that all systems are functioning properly, which might take 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: Steering Sensor Replacement on a 2017 Ford Fusion

Vehicle: 2017 Ford Fusion, 45,000 miles

Problem: Customer reported a persistent check engine light and vague steering response.

Diagnosis: A scan revealed the B0477 code, and testing confirmed the steering wheel position sensor was faulty.

Solution: Replaced the steering wheel position sensor and cleared the codes.

Cost: $250 (sensor $150, labor $100)

Result: After the repair, the steering response improved, and the check engine light remained off.

Case Study 2: Wiring Repair on a 2016 Honda Accord

Vehicle: 2016 Honda Accord, 60,000 miles

Problem: Customer experienced difficulty with lane-keeping assist and received a B0477 code.

Diagnosis: Inspection found corroded wiring connections leading to the sensor.

Solution: Repaired the wiring and secured connections to restore functionality.

Cost: $180 (parts $30, labor $150)

Result: Lane-keeping assist functioned properly post-repair, and the B0477 code did not return.

Diagnose B0477

Use GeekOBD APP for professional diagnosis!

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  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: B0477
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: HIGH
Category: Body Codes