B0755 - Transmission Range Sensor Circuit Malfunction in 2005-2015 Ford F-150 and Other Models

Quick Answer

B0755 means: B0755 indicates a malfunction in the transmission range sensor circuit.

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

Can I drive with B0755? Immediate attention is recommended to avoid transmission damage.

Common Questions

What does B0755 mean and how does it affect my car?

B0755 indicates that there is an issue with the transmission range sensor circuit. This can lead to improper shifting and performance issues. If unresolved, it may cause further damage to the transmission, leading to costly repairs.

What are the most common causes of B0755 and how much does it cost to fix?

The most common causes include a faulty transmission range sensor, damaged wiring, or low transmission fluid. Repair costs can range from $150 to $300 for sensor replacement, with additional costs for wiring or fluid changes.

Can I drive my car with B0755 or should I stop immediately?

While you may be able to drive a short distance, it is not advisable to ignore the B0755 code. Continued driving can lead to more severe transmission issues, and it's best to address it promptly.

How can I diagnose B0755 myself using GeekOBD APP?

Using the GeekOBD APP, connect to your vehicle's OBD2 port, perform a scan to retrieve the B0755 code, and review the freeze frame data to understand the conditions under which the code was triggered.

What vehicles are most commonly affected by B0755?

The B0755 code is frequently reported in 2005-2015 Ford F-150 models, but it can also appear in other Ford vehicles like the Explorer and Escape from similar years.

How can I prevent B0755 from happening again?

Regular maintenance, including checking transmission fluid levels and inspecting wiring and connectors, can help prevent B0755 from recurring. Ensuring timely repairs of any transmission-related issues is also crucial.

What is B0755?

The diagnostic trouble code (DTC) B0755 indicates a malfunction in the transmission range sensor circuit, commonly found in various vehicles including the 2005-2015 Ford F-150 and several other models from Ford. This sensor is essential for determining the position of the transmission, which directly affects gear shifting. When the vehicle's Engine Control Module (ECM) detects an irregularity in the sensor's output, it triggers the B0755 code. This can result in various transmission issues, such as the inability to shift correctly, unexpected gear shifts, or the engine stalling. In real-world scenarios, drivers may notice the 'Check Engine' light illuminated on the dashboard, and the vehicle may enter 'limp mode'—a safety feature that restricts performance to prevent further damage. Addressing this code promptly is crucial, as neglecting it can lead to further transmission complications, increased repair costs, and reduced vehicle safety.

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

Symptoms

Common symptoms when B0755 is present:

  • The 'Check Engine' light remains illuminated, which can be the first indicator of a problem with your vehicle's transmission system.
  • Drivers may experience harsh or erratic shifting, meaning the car may shift gears unexpectedly or struggle to change gears smoothly.
  • Fuel efficiency may decline noticeably, with some drivers reporting a drop of 10-20% in fuel economy due to improper gear engagement.
  • In some cases, the vehicle may enter limp mode, restricting engine power and speed to prevent further damage.
  • A grinding noise while shifting can occur, indicating a mechanical issue linked to the transmission range sensor.

Possible Causes

Most common causes of B0755 (ordered by frequency):

  1. The most common cause of B0755 is a faulty transmission range sensor, with a likelihood of around 60%. This sensor may fail due to wear and tear or electrical issues.
  2. Another potential cause is damaged wiring or connectors in the transmission range sensor circuit, which could account for about 25% of cases. These connections can corrode or break, leading to faulty readings.
  3. A third cause could be low transmission fluid levels, which can affect the sensor's performance. Maintaining proper fluid levels is crucial for preventing this issue.
  4. Less commonly, a malfunctioning ECM may misinterpret the signals from the range sensor, although this is rare and accounts for about 10% of cases.
  5. Finally, a mechanical failure within the transmission itself, such as a worn solenoid, could lead to issues with the range sensor's readings, albeit this is a less frequent occurrence.

B0755 Repair Costs

Cost Breakdown by Repair Type

Transmission Range Sensor Replacement

Replacing the faulty transmission range sensor with a new OEM or aftermarket part.

  • Total: $150 - $300
  • Success rate: 90%
Wiring Harness Repair

Repairing or replacing damaged wiring or connectors leading to the sensor.

  • Total: $100 - $200
  • Success rate: 80%
Transmission Fluid Change

Changing low or contaminated transmission fluid that may be affecting sensor performance.

  • Total: $80 - $150
  • Success rate: 75%
Money-Saving Tips for B0755
  • 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 B0755 Diagnosis Process

Follow these systematic steps to accurately diagnose B0755. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Perform an initial visual inspection to look for damaged wiring, loose connections, or signs of corrosion in the transmission range sensor circuit (5-10 minutes)

Step 1: Perform an initial visual inspection to look for damaged wiring, loose connections, or signs of corrosion in the transmission range sensor circuit (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: Use the GeekOBD APP to conduct an OBD2 scan, retrieving all codes and freeze frame data to get context on the fault (10-15 minutes)

Step 2: Use the GeekOBD APP to conduct an OBD2 scan, retrieving all codes and freeze frame data to get context on the fault (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: Test the transmission range sensor with a multimeter to ensure it operates within specified parameters (20-30 minutes)

Step 3: Test the transmission range sensor with a multimeter to ensure it operates within specified parameters (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: After repairs, conduct a system function test to verify that the sensor is now working correctly and clear the codes (10-15 minutes)

Step 4: After repairs, conduct a system function test to verify that the sensor is now working correctly and clear the codes (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: Finally, perform a road test under various conditions to ensure the issue is resolved and the vehicle shifts smoothly (15-20 minutes)

Step 5: Finally, perform a road test under various conditions to ensure the issue is resolved and the vehicle shifts smoothly (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: Transmission Range Sensor Replacement in 2010 Ford F-150

Vehicle: 2010 Ford F-150, 120,000 miles

Problem: Customer reported harsh shifting and 'Check Engine' light illuminated.

Diagnosis: Using GeekOBD APP, retrieved B0755 code and performed visual inspection revealing a faulty transmission range sensor.

Solution: Replaced the transmission range sensor and cleared the code.

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

Result: Customer reported smooth shifting after repairs, and the 'Check Engine' light remained off.

Case Study 2: Wiring Repair for 2013 Ford Escape

Vehicle: 2013 Ford Escape, 90,000 miles

Problem: Customer experienced erratic shifting and occasional stalling.

Diagnosis: B0755 code retrieved via GeekOBD APP. Inspected wiring and found corroded connectors.

Solution: Repaired wiring harness and replaced connectors.

Cost: $180 (labor $80, parts $100)

Result: Vehicle operated normally post-repair, with no further issues reported.

Diagnose B0755

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: B0755
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: HIGH
Category: Body Codes