AutoCodes – Lexus – P0087 Lexus

P0087 Lexus Code - Fuel Rail / System Pressure Too Low

Quick Answer

With a cold engine, the internal pressure of the common rail is regulated by the Pressure Control Valve of the common rail assembly. Common causes include Fuel Filter Clogged, Fuel Leak, Faulty Pressure Control Valve. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0087 Lexus indicates Fuel Rail / System Pressure Too Low.
Common causes: Common causes include Fuel Filter Clogged, Fuel Leak, Faulty Pressure Control Valve.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 27,471

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 19, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0087 Lexus Description

With a cold engine, the internal pressure of the common rail is regulated by the Pressure Control Valve of the common rail assembly. With a warm engine, it is regulated by the suction control valve of the fuel supply pump. When the engine is running with a light load, it is regulated by both the pressure control valve and the suction control valve. Based on signals from the Engine Control Module (ECM), the pressure control valve opens when sudden deceleration occurs to prevent the fuel pressure from becoming too high. The Diagnostic Trouble Code (DTC) will set when the Engine Control Module has determined that the fuel rail pressure is too low for a specific engine RPM.

OBDII Code P0087 Lexus - Fuel Rail / System Pressure Too Low - AutoCodes.com — P0087 Lexus Code - Fuel Rail / System Pressure Too Low

What does this mean?

What are the Possible Causes of the DTC P0087 Lexus?

Fuel Filter Clogged
Fuel Leak
Faulty Pressure Control Valve
Pressure Control Valve harness is open or shorted
Pressure Control Valve circuit poor electrical connection
Faulty Fuel Injector
Faulty Engine Control Module (ECM)

How to Fix the DTC P0087 Lexus?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0087 Lexus code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0087 Lexus code?

Need more information on how to fix the P0087 Lexus code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0087 Lexus Code

1. What are the common symptoms of OBDII code P0087 in a Lexus related to fuel rail/system pressure too low?

- Common symptoms include rough idling, lack of power, engine stalling, and difficulty starting the vehicle.

2. What are the potential causes of OBDII code P0087 in a Lexus indicating low fuel rail/system pressure?

- Possible causes include a faulty fuel pump, clogged fuel filter, fuel pressure regulator issues, or a vacuum leak in the fuel system.

3. How can I diagnose the OBDII code P0087 in my Lexus to pinpoint the exact cause?

- Diagnostic steps may involve checking fuel pressure using a gauge, inspecting the fuel pump, testing the fuel pressure regulator, and looking for any visible leaks in the fuel system.

4. Can a dirty or clogged fuel filter trigger the OBDII code P0087 in a Lexus?

- Yes, a dirty or clogged fuel filter can restrict fuel flow and lead to low fuel pressure, triggering the P0087 trouble code.

5. What are some repair tips for resolving OBDII code P0087 related to low fuel rail/system pressure in a Lexus?

- Repair tips may include replacing the fuel filter, inspecting and possibly replacing the fuel pump, checking the fuel pressure regulator, and ensuring proper fuel system maintenance.

6. Are there any safety precautions to keep in mind when dealing with OBDII code P0087 in a Lexus?

- Safety precautions include working in a well-ventilated area, relieving fuel pressure before servicing the fuel system, and following proper procedures outlined in the vehicle's service manual.

7. Can driving with OBDII code P0087 in a Lexus cause further damage to the vehicle?

- Continuing to drive with low fuel pressure indicated by code P0087 can potentially cause engine damage due to fuel starvation, so it's advisable to address the issue promptly.

8. Is it possible for a failing fuel pump to be the sole reason behind OBDII code P0087 appearing in a Lexus?

- Yes, a failing fuel pump is a common culprit for triggering the P0087 code in a Lexus by not delivering sufficient fuel pressure to the system.

9. How important is it to address OBDII code P0087 in a timely manner to maintain the performance of a Lexus?

- It is crucial to address code P0087 promptly to ensure proper fuel delivery, maintain engine performance, prevent potential breakdowns, and avoid more costly repairs down the line.

10. Can extreme weather conditions or poor fuel quality contribute to triggering OBDII code P0087 in a Lexus?

- Yes, extreme weather conditions affecting fuel viscosity or poor-quality fuel with contaminants can impact fuel system performance and potentially lead to the P0087 trouble code.