AutoCodes – GMC – P0087 2018 GMC Sierra

P0087 2018 GMC Sierra Code - Fuel Rail Low Pressure

Quick Answer

The Engine Control Module (ECM) uses the Fuel Rail Pressure (FRP) Sensor to determine fuel pressure to the fuel injectors. Common causes include Blocked Fuel Filter, Faulty Fuel Rail Pressure (FRP) Sensor, Fuel Rail Pressure Sensor harness is open or shorted. 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 2018 GMC Sierra indicates Fuel Rail Low Pressure.
Common causes: Common causes include Blocked Fuel Filter, Faulty Fuel Rail Pressure (FRP) Sensor, Fuel Rail Pressure Sensor harness is open or shorted.
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 249

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 15, 2022

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0087 2018 GMC Sierra Description

The Engine Control Module (ECM) uses the Fuel Rail Pressure (FRP) Sensor to determine fuel pressure to the fuel injectors. This is then compared to the calculated target fuel pressure as determined by the ECM. The ECM adjusts the FRP by modulating the duty cycle of the control driver of the fuel pressure regulator. Injector pulse duration is determined by the measured rail pressure and the target injection fuel into each cylinder. If a sensor circuit malfunction is detected, or the commanded fuel injection pump flow is not within the proper range for a given engine load and speed, the Diagnostic Trouble Code (DTC) will be set.

OBDII Code P0087 2018 GMC Sierra - Fuel Rail Low Pressure - AutoCodes.com — P0087 2018 GMC Sierra Code - Fuel Rail Low Pressure

What does this mean?

What are the Possible Causes of the DTC P0087 2018 GMC Sierra?

Blocked Fuel Filter
Faulty Fuel Rail Pressure (FRP) Sensor
Fuel Rail Pressure Sensor harness is open or shorted
Fuel Rail Pressure Sensor electrical circuit poor connection
Faulty Fuel Injector
Faulty Fuel Pump

How to Fix the DTC P0087 2018 GMC Sierra?

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 2018 GMC Sierra 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 2018 GMC Sierra code?

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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 2018 GMC Sierra Code

1. What does OBDII code P0087 on a 2018 GMC Sierra indicate?

- OBDII code P0087 in a 2018 GMC Sierra indicates a fuel rail system low pressure condition.

2. What are the common symptoms of OBDII code P0087 in a 2018 GMC Sierra?

- Common symptoms of OBDII code P0087 in a 2018 GMC Sierra may include hard starting, engine misfires, lack of power, and stalling.

3. What are the possible causes of OBDII code P0087 in a 2018 GMC Sierra?

- The possible causes of OBDII code P0087 in a 2018 GMC Sierra include a faulty fuel pump, clogged fuel filter, fuel pressure regulator issues, or a leak in the fuel system.

4. How can I diagnose the issue related to OBDII code P0087 in a 2018 GMC Sierra?

- To diagnose the issue related to OBDII code P0087 in a 2018 GMC Sierra, you may need to perform a fuel pressure test, inspect the fuel pump, check for leaks in the fuel system, and examine the fuel filter and pressure regulator.

5. Can I continue driving my 2018 GMC Sierra with OBDII code P0087?

- It is not recommended to continue driving your 2018 GMC Sierra with OBDII code P0087, as it can lead to engine damage and potential safety hazards. It is best to address the issue promptly.

6. How can I repair OBDII code P0087 in my 2018 GMC Sierra?

- Repairing OBDII code P0087 in a 2018 GMC Sierra may involve replacing a faulty fuel pump, cleaning or replacing the fuel filter, repairing any leaks in the fuel system, or addressing issues with the fuel pressure regulator.

7. Is it possible to reset OBDII code P0087 in a 2018 GMC Sierra without fixing the underlying issue?

- While you can clear the OBDII code P0087 in a 2018 GMC Sierra using an OBDII scanner, it is crucial to address the underlying issue causing the code to prevent further problems.

8. How much does it typically cost to repair OBDII code P0087 in a 2018 GMC Sierra?

- The cost to repair OBDII code P0087 in a 2018 GMC Sierra can vary depending on the specific issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Are there any preventive maintenance tips to avoid OBDII code P0087 in a 2018 GMC Sierra?

- To prevent OBDII code P0087 in a 2018 GMC Sierra, it is recommended to follow the manufacturer's recommended maintenance schedule, regularly replace the fuel filter, and use high-quality fuel to keep the fuel system clean.

10. Can a DIY enthusiast with basic automotive skills fix OBDII code P0087 in a 2018 GMC Sierra?

- Depending on the specific issue causing OBDII code P0087 in a 2018 GMC Sierra, a DIY enthusiast with basic automotive skills may be able to address some repairs, such as replacing the fuel filter. However, more complex issues may require professional assistance.