P0086 - Fuel Pressure Sensor Range/Performance Problem in Ford, GM, and Honda Vehicles

Quick Answer

P0086 means: P0086 indicates a fuel pressure sensor issue, affecting engine performance.

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

Can I drive with P0086? Immediate attention is advised to prevent potential engine damage.

Common Questions

What does P0086 mean and how does it affect my car?

P0086 signifies a fuel pressure sensor issue that can lead to poor engine performance and reduced fuel economy. If left unresolved, it may cause stalling and long-term engine damage.

What are the most common causes of P0086 and how much does it cost to fix?

Common causes include a faulty fuel pressure sensor, clogged fuel filter, and electrical issues. Repair costs typically range from $100 to $300 depending on the issue.

Can I drive my car with P0086 or should I stop immediately?

It's advisable to stop driving if you see the P0086 code, as it can lead to significant engine performance issues and potential damage.

How can I diagnose P0086 myself using GeekOBD APP?

Using the GeekOBD APP, you can scan for codes, review freeze frame data, and perform live data monitoring to assess fuel pressure readings and sensor performance.

What vehicles are most commonly affected by P0086?

Common vehicles include the 2013-2018 Ford Escape, 2012-2016 Honda Civic, and various models from GM like the Chevrolet Malibu. Always check for known recalls or TSBs.

How can I prevent P0086 from happening again?

Regular maintenance, such as timely fuel filter changes and inspections of fuel lines, can help prevent P0086 from recurring. Ensure to use quality fuel and monitor for any leaks.

What is P0086?

The diagnostic trouble code (DTC) P0086 indicates a fuel pressure sensor range or performance problem. This code is common in various vehicles, particularly in models produced by Ford, General Motors, and Honda, such as the 2013-2018 Ford Escape and 2012-2016 Honda Civic. When this code triggers, it typically means that the powertrain control module (PCM) is detecting that the fuel pressure sensor is providing readings that are either too high or too low compared to the expected range. This could lead to poor engine performance, reduced fuel efficiency, and even engine stalling in severe cases. The fuel system is critical for optimal engine operation, as it regulates the amount of fuel injected into the engine based on various parameters. If the PCM cannot accurately assess the fuel pressure, it may not correctly adjust the fuel delivery, which can result in rough idling, hesitation during acceleration, and decreased overall engine performance. Ignoring this code may lead to more severe issues, including potential engine damage, so it’s essential for vehicle owners to address it promptly.

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

Symptoms

Common symptoms when P0086 is present:

  • Check engine light stays on constantly, indicating a need for immediate diagnostics.
  • Engine hesitates during acceleration, leading to a frustrating driving experience.
  • Fuel economy decreased by 10-15%, resulting in more frequent visits to the gas station.
  • Rough idling, causing the vehicle to shake or vibrate while stopped.
  • Potential stalling of the engine, particularly during stop-and-go traffic.

Possible Causes

Most common causes of P0086 (ordered by frequency):

  1. Faulty fuel pressure sensor (60% likelihood) - The most common cause, where the sensor fails to send accurate pressure readings to the PCM.
  2. Clogged fuel filter (20% likelihood) - A blocked filter can restrict fuel flow, leading to incorrect pressure readings.
  3. Leaking fuel lines (10% likelihood) - Fuel leaks can alter pressure levels and cause the code to trigger.
  4. Electrical issues (5% likelihood) - Damaged wiring or corroded connectors that affect sensor performance.
  5. Faulty PCM (rare but possible) - The engine control module itself may malfunction, leading to inaccurate readings.

P0086 Repair Costs

Cost Breakdown by Repair Type

Fuel Pressure Sensor Replacement

Replacing the faulty fuel pressure sensor with a new OEM or aftermarket part.

  • Total: $150 - $300
  • Success rate: 90%
Fuel Filter Replacement

Changing out a clogged fuel filter that may be contributing to the issue.

  • Total: $100 - $200
  • Success rate: 80%
Money-Saving Tips for P0086
  • 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 P0086 Diagnosis Process

Follow these systematic steps to accurately diagnose P0086. 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 fuel pressure sensor and related components (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the fuel pressure sensor and related components (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 (10-15 minutes)

Step 4: System function test - Verify proper operation after repairs and clear 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: Road test verification - Drive the vehicle under various conditions to confirm repair success (15-20 minutes)

Step 5: 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: Fuel Pressure Sensor Replacement in a 2015 Ford Escape

Vehicle: 2015 Ford Escape, 75,000 miles

Problem: Customer reported a rough idle and check engine light.

Diagnosis: Scanned for DTCs and confirmed P0086. Performed visual inspection and found the fuel pressure sensor was faulty.

Solution: Replaced the fuel pressure sensor and cleared the codes.

Cost: $220 (sensor $150, labor $70)

Result: Customer reported smooth operation and improved fuel economy after the repair.

Case Study 2: Clogged Fuel Filter in a 2013 Honda Civic

Vehicle: 2013 Honda Civic, 85,000 miles

Problem: Engine hesitated during acceleration and check engine light was on.

Diagnosis: Checked codes and identified P0086. Inspected fuel system and found a clogged fuel filter.

Solution: Replaced the fuel filter and reset the ECU.

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

Result: Vehicle performance returned to normal with no further issues.

Diagnose P0086

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: P0086
System: Powertrain (Engine, Transmission, Emissions)
Severity: HIGH
Category: Engine Codes