P087C - Transmission Fluid Pressure Sensor/Switch 'C' Circuit Range/Performance Problem in Common Vehicles

Quick Answer

P087C means: P087C indicates a problem with the transmission fluid pressure sensor or switch 'C'.

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

Can I drive with P087C? Immediate attention is recommended to avoid major transmission damage.

Common Questions

What does P087C mean and how does it affect my car?

P087C indicates a problem with the transmission fluid pressure sensor, which can lead to erratic shifting, poor acceleration, and potentially severe damage to your transmission if not fixed.

What are the most common causes of P087C and how much does it cost to fix?

Common causes include a faulty transmission fluid pressure sensor, wiring issues, and low fluid levels. Repair costs can range from $100 for wiring repairs to $300 for sensor replacement.

Can I drive my car with P087C or should I stop immediately?

While you may be able to drive short distances, continuing to drive with P087C can cause further damage to the transmission. It's best to address the issue as soon as possible.

How can I diagnose P087C myself using GeekOBD APP?

Download the GeekOBD APP, connect your device, and run a diagnostic scan. The APP will provide you with codes and freeze frame data to help understand the context of the P087C code.

What vehicles are most commonly affected by P087C?

P087C commonly affects vehicles like the 2015-2018 Ford F-150, Chevrolet Silverado (2014-2018), and GMC Sierra (2014-2018).

How can I prevent P087C from happening again?

Regularly check and maintain your transmission fluid levels, inspect wiring connections, and have your vehicle serviced according to the manufacturer’s recommendations.

What is P087C?

The diagnostic trouble code P087C indicates a range or performance issue with the transmission fluid pressure sensor or switch 'C'. This code typically appears in vehicles equipped with automatic transmissions, such as the 2015-2018 Ford F-150 and various GM models like the Chevrolet Silverado and GMC Sierra. The role of the transmission fluid pressure sensor is crucial as it monitors the hydraulic pressure within the transmission fluid system. When the sensor detects that the pressure is out of the expected range, it triggers the P087C code. This malfunction can lead to significant problems, including erratic shifting, reduced acceleration, and even complete transmission failure if left untreated. Drivers may notice symptoms like slipping gears or a delayed response when shifting from park to drive. Addressing this issue promptly is essential to avoid costly repairs and ensure the longevity of the transmission. If you're experiencing this code, it's vital to have a qualified technician perform diagnostics to pinpoint the exact cause, as this code can sometimes accompany other issues in the transmission system.

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

Symptoms

Common symptoms when P087C is present:

  • Check engine light stays on consistently, indicating a fault with the transmission system.
  • Engine hesitates during acceleration, causing a frustrating driving experience.
  • Fuel economy decreased by 10-15%, leading to increased expenses at the pump.
  • Slipping gears may occur while driving, indicating a lack of proper engagement.
  • Delayed shifting when changing from park to drive, which can become dangerous in certain situations.

Possible Causes

Most common causes of P087C (ordered by frequency):

  1. Faulty transmission fluid pressure sensor (60% likelihood) - Commonly, the sensor itself may fail, causing inaccurate readings.
  2. Wiring issues or poor connections (20% likelihood) - Damaged wiring can disrupt the signal between the sensor and the PCM, leading to code P087C.
  3. Low transmission fluid levels (10% likelihood) - Insufficient fluid can affect hydraulic pressure, which the sensor monitors.
  4. A malfunction in the transmission control module (5% likelihood) - Though rarer, a malfunctioning TCM can misinterpret the sensor's data.
  5. Internal transmission problems (5% likelihood) - Issues like worn components can lead to erratic pressure readings.

P087C Repair Costs

Cost Breakdown by Repair Type

Transmission Fluid Pressure Sensor Replacement

Replacing the faulty sensor with an OEM part.

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

Fixing damaged wiring or connections that may be causing the issue.

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

Replacing old transmission fluid if levels are low or fluid is dirty.

  • Total: $100 - $250
  • Success rate: 70%
Money-Saving Tips for P087C
  • 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 P087C Diagnosis Process

Follow these systematic steps to accurately diagnose P087C. 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 multimeter or specific diagnostic tools to test the transmission fluid pressure sensor and wiring (20-30 minutes)

Step 3: Component testing - Use 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: Fluid level check - Verify that the transmission fluid is at the appropriate level and in good condition (10-15 minutes)

Step 4: Fluid level check - Verify that the transmission fluid is at the appropriate level and in good condition (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: System function test - Verify proper operation after repairs, clear codes, and ensure everything is functioning correctly (10-15 minutes)

Step 5: System function test - Verify proper operation after repairs, clear codes, and ensure everything is functioning correctly (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 6: Step 6: Road test verification - Drive the vehicle under various conditions to confirm repair success (15-20 minutes)

Step 6: Road test verification - Drive the vehicle under various conditions to confirm repair success (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 on 2017 Ford F-150

Vehicle: 2017 Ford F-150, 45,000 miles

Problem: Customer reported check engine light and slipping gears.

Diagnosis: OBD2 scan revealed code P087C. Visual inspection showed a faulty pressure sensor.

Solution: Replaced the transmission fluid pressure sensor and cleared the codes.

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

Result: Customer reported improved shifting and no further check engine light.

Case Study 2: Wiring Repair on 2016 Chevrolet Silverado

Vehicle: 2016 Chevrolet Silverado, 60,000 miles

Problem: Driver experienced delayed shifting and poor acceleration.

Diagnosis: Found damaged wiring harness connected to the transmission fluid pressure sensor.

Solution: Repaired the wiring and replaced a few connectors.

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

Result: Successful repair with no recurrence of symptoms.

Diagnose P087C

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: P087C
System: Powertrain (Engine, Transmission, Emissions)
Severity: HIGH
Category: Engine Codes