P087B - Transmission Fluid Pressure Sensor Circuit Range/Performance Problem in Common Vehicles

Quick Answer

P087B means: P087B indicates an issue with the transmission fluid pressure sensor circuit, affecting shifting and performance.

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

Can I drive with P087B? Immediate attention is required to prevent further transmission damage.

Common Questions

What does P087B mean and how does it affect my car?

The P087B code indicates a problem with the transmission fluid pressure sensor circuit. This can affect your car's shifting, leading to poor acceleration and potentially damaging your transmission over time. It's crucial to address this issue promptly to maintain optimal vehicle performance.

What are the most common causes of P087B and how much does it cost to fix?

Common causes of P087B include a faulty transmission fluid pressure sensor, wiring issues, and low transmission fluid levels. Repair costs typically range from $150 to $700 depending on the specific issue and parts required.

Can I drive my car with P087B or should I stop immediately?

It's best to not drive your vehicle extensively with a P087B code. Continued driving can lead to more significant transmission damage, so it's advised to address the issue as soon as possible.

How can I diagnose P087B myself using GeekOBD APP?

You can use the GeekOBD APP to scan for diagnostic trouble codes and access freeze frame data. This information will help you understand the context of the fault and guide you through the troubleshooting process, including checking sensor readings and wiring integrity.

What vehicles are most commonly affected by P087B?

P087B is frequently reported in vehicles such as the 2014-2018 Chevrolet Silverado, 2015-2019 Ford F-150, and 2017-2019 Dodge Ram 1500. It's important to check for any recalls or technical service bulletins related to your specific model.

How can I prevent P087B from happening again?

Regular maintenance is key. Ensure your transmission fluid is at the appropriate level and schedule periodic transmission services. Also, visually inspect wiring and connections during routine checks to catch any potential issues early.

What is P087B?

The DTC P087B code indicates that there is a problem with the transmission fluid pressure sensor circuit. This code is prevalent in various vehicles, especially in models like the 2014-2018 Chevrolet Silverado and the 2015-2019 Ford F-150. The transmission fluid pressure sensor is crucial as it monitors the fluid pressure within the transmission, helping to ensure that the vehicle operates efficiently. If the pressure is too low or too high, it can lead to erratic shifting, poor acceleration, and even transmission failure over time. Car owners might notice that their vehicle struggles during acceleration or the check engine light remains illuminated. Ignoring this code can result in severe transmission issues, which can be costly to repair. Therefore, understanding the implications of the P087B code is essential for maintaining your vehicle's health and performance. Regular diagnostic checks and maintaining fluid levels can help prevent this issue from arising in the first place.

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

Symptoms

Common symptoms when P087B is present:

  • The check engine light remains illuminated, indicating a potential issue with the transmission system.
  • Drivers may experience engine hesitation during acceleration, leading to a feeling of reduced power or responsiveness.
  • Fuel economy may decrease by 10-15%, indicating the engine is working harder to compensate for shifting issues.
  • Shifting delays or harsh shifts can occur, making the driving experience uncomfortable and potentially damaging to the transmission.
  • In extreme cases, the vehicle may enter 'limp mode', severely limiting performance until the issue is resolved.

Possible Causes

Most common causes of P087B (ordered by frequency):

  1. The most common cause of the P087B code is a faulty transmission fluid pressure sensor, which accounts for approximately 60% of cases. This sensor may fail due to wear or damage.
  2. Another potential cause is wiring issues, such as damaged or corroded wires leading to the sensor. This can disrupt the signal and trigger the code.
  3. Low transmission fluid levels can also lead to inaccurate readings, so checking and maintaining proper fluid levels can help prevent this issue.
  4. A less common but serious cause could be internal transmission problems, such as worn gears or clutches, which can lead to significant repair costs if not addressed.
  5. In rare cases, a malfunctioning engine control unit (ECU) could falsely trigger the P087B code, complicating diagnosis.

P087B Repair Costs

Cost Breakdown by Repair Type

Sensor Replacement

Replacing the faulty transmission fluid pressure sensor with a new OEM part.

  • Total: $150 - $300
  • Success rate: 85%
Wiring Repair

Repairing or replacing damaged wiring related to the sensor.

  • Total: $100 - $250
  • Success rate: 75%
Full Transmission Service

Comprehensive checkup and service of the transmission to prevent future issues.

  • Total: $300 - $700
  • Success rate: 90%
Money-Saving Tips for P087B
  • 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 P087B Diagnosis Process

Follow these systematic steps to accurately diagnose P087B. 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 pressure sensor and wiring (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the transmission fluid pressure sensor and wiring (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 to ensure the issue is resolved (10-15 minutes)

Step 4: System function test - Verify proper operation after repairs and clear codes to ensure the issue is resolved (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 monitor for any reoccurrence of the code (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and monitor for any reoccurrence of the code (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 Fluid Pressure Sensor Replacement in 2016 Chevrolet Silverado

Vehicle: 2016 Chevrolet Silverado 1500, 75,000 miles

Problem: Customer reported check engine light and rough shifting during acceleration.

Diagnosis: After scanning with GeekOBD APP, P087B was confirmed. A visual inspection revealed a damaged transmission fluid pressure sensor.

Solution: Replaced the faulty sensor and topped off transmission fluid.

Cost: $230 (sensor $150, labor $80)

Result: The customer reported smooth shifting and no further check engine light after the repair.

Case Study 2: Wiring Issue in 2018 Ford F-150

Vehicle: 2018 Ford F-150, 50,000 miles

Problem: Vehicle experienced harsh shifts and check engine light active.

Diagnosis: GeekOBD APP indicated P087B. Wiring inspection showed corrosion on the sensor connector.

Solution: Repaired the wiring harness and replaced the sensor.

Cost: $180 (wiring repair $100, sensor $80)

Result: The vehicle returned to normal operation, with improved performance and no reoccurrence of the code.

Diagnose P087B

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: P087B
System: Powertrain (Engine, Transmission, Emissions)
Severity: HIGH
Category: Engine Codes