P071B - Understanding DTC P071B: Transmission Fluid Temperature Sensor Range/Performance Problem - Common in 2015-2018 Ford Explorer

Quick Answer

P071B means: DTC P071B indicates a problem with the transmission fluid temperature sensor, which can lead to serious transmission issues if not addressed.

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

Can I drive with P071B? Immediate attention is recommended to avoid severe transmission damage.

Common Questions

What does P071B mean and how does it affect my car?

DTC P071B indicates a problem with the transmission fluid temperature sensor, which can affect your car's shifting performance and lead to increased wear on the transmission. It can also result in decreased fuel efficiency and potential overheating, leading to costly repairs if not addressed promptly.

What are the most common causes of P071B and how much does it cost to fix?

The most common cause of P071B is a faulty transmission fluid temperature sensor, which typically costs between $150 and $300 to replace. Other causes include wiring issues and low fluid levels. Timing and thorough diagnostics can help in understanding the exact issue before incurring costs.

Can I drive my car with P071B or should I stop immediately?

While you may be able to drive your car with a P071B code, it's not advisable. Continued driving can lead to further transmission damage, overheating, and ultimately a complete failure, which could leave you stranded and result in much higher repair costs.

How can I diagnose P071B myself using GeekOBD APP?

To diagnose P071B with the GeekOBD APP, first connect the device to your vehicle's OBD2 port. Use the app to scan for trouble codes and read freeze frame data. Pay attention to the transmission fluid temperature readings and check for any related codes that may provide additional context.

What vehicles are most commonly affected by P071B?

P071B is commonly found in models like the 2015-2018 Ford Explorer, as well as other Ford vehicles equipped with similar transmission systems. It's important to check for any recalls or Technical Service Bulletins (TSBs) related to your specific vehicle model.

How can I prevent P071B from happening again?

To prevent P071B from recurring, make sure to perform regular maintenance on your transmission, including checking fluid levels and condition. Regularly inspect wiring and connectors for signs of wear and corrosion, and replace the transmission fluid according to the manufacturer's recommended intervals.

What is P071B?

DTC P071B refers to a problem with the transmission fluid temperature sensor, specifically indicating a range or performance issue. This code is primarily relevant for models like the 2015-2018 Ford Explorer, where the vehicle's engine control unit (ECU) detects that the transmission fluid temperature sensor is not functioning properly or the temperature readings are out of the expected range. The transmission fluid temperature sensor plays a crucial role in ensuring the transmission operates smoothly by providing the ECU with vital information regarding fluid temperature. If the temperature is too low or too high, it can lead to transmission wear, reduced efficiency, and even catastrophic failure if left unchecked. In real-world scenarios, failing to address this issue may result in poor vehicle performance, such as difficulty shifting gears, increased fuel consumption, or overheating. Drivers may also notice the check engine light illuminating on their dashboard. Understanding and addressing DTC P071B promptly is essential for maintaining vehicle performance and longevity, especially in vehicles that frequently operate in extreme temperatures or under heavy loads.

System: P - Powertrain (Engine, Transmission, Emissions)

Symptoms

Common symptoms when P071B is present:

  • Check engine light stays on constantly, indicating a persistent issue that needs attention.
  • Transmission may hesitate or jerk during acceleration, leading to a frustrating driving experience.
  • Fuel economy decreased by 10-15%, putting additional strain on your wallet due to frequent refueling.
  • Unusual transmission noises may occur, such as grinding or whining sounds when shifting gears.
  • Transmission overheating warning may appear, indicating a critical need for immediate service.

Possible Causes

Most common causes of P071B (ordered by frequency):

  1. The most common cause is a faulty transmission fluid temperature sensor, occurring in about 70% of cases. This sensor can fail due to wear and tear or exposure to extreme temperatures.
  2. Another common cause is issues with wiring or connectors related to the sensor, which can exhibit corrosion or damage, leading to false readings.
  3. A third cause could be low transmission fluid levels due to leaks, which can be prevented by regular fluid checks and maintenance.
  4. Less common but serious causes include internal transmission damage or failure, which could necessitate a complete rebuild or replacement.
  5. Rarely, software issues within the vehicle's ECU could lead to erroneous temperature readings, requiring a software update or reprogramming.

P071B Repair Costs

Cost Breakdown by Repair Type

Sensor Replacement

Replacing the faulty transmission fluid temperature sensor to restore proper function.

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

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

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

Changing the transmission fluid to prevent overheating and ensure proper operation.

  • Total: $100 - $200
  • Success rate: 85%
Money-Saving Tips for P071B
  • 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 P071B Diagnosis Process

Follow these systematic steps to accurately diagnose P071B. 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 or specific diagnostic tools to test the transmission fluid temperature sensor (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the transmission fluid temperature 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 - 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 the issue is resolved (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure the issue is 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: 2016 Ford Explorer Transmission Fluid Temperature Sensor Replacement

Vehicle: 2016 Ford Explorer, 75,000 miles

Problem: Customer reported check engine light on and transmission hesitating during acceleration.

Diagnosis: OBD2 scan revealed DTC P071B. Visual inspection showed a faulty temperature sensor.

Solution: Replaced the transmission fluid temperature sensor and cleared the trouble code.

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

Result: Customer reported smooth transmission operation and improved fuel efficiency after repair.

Case Study 2: 2017 Ford F-150 Wiring Repair for P071B

Vehicle: 2017 Ford F-150, 60,000 miles

Problem: Check engine light illuminated and transmission overheating warning displayed.

Diagnosis: Diagnostic steps identified corroded wiring to the transmission fluid temperature sensor.

Solution: Repaired wiring and connectors, and performed transmission fluid change.

Cost: $200 (parts $50, labor $150)

Result: Transmission operated normally post-repair, with no further warning lights.

Diagnose P071B

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
Download GeekOBD APP Get MOBD Adapter

Code Information

Code: P071B
System: Powertrain (Engine, Transmission, Emissions)
Severity: HIGH
Category: Engine Codes