AutoCodes – GMC – P0090 2015 GMC Sierra

P0090 2015 GMC Sierra Code - Fuel Pressure Regulator Control Circuit

Quick Answer

High-pressure fuel is regulated by the high-pressure fuel pump actuator, which is a part of the High-Pressure Fuel Pump. Common causes include Faulty High-Pressure Fuel Pump, High-Pressure Fuel Pump harness is open or shorted, High-Pressure Fuel Pump electrical circuit poor connection. 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: P0090 2015 GMC Sierra indicates Fuel Pressure Regulator Control Circuit.
Common causes: Common causes include Faulty High-Pressure Fuel Pump, High-Pressure Fuel Pump harness is open or shorted, High-Pressure Fuel Pump electrical circuit poor connection.
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 718

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 May 16, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P0090 2015 GMC Sierra Description

High-pressure fuel is regulated by the high-pressure fuel pump actuator, which is a part of the High-Pressure Fuel Pump. The high-pressure fuel pump actuator is a solenoid valve. The Engine Control Module (ECM) provides battery voltage on the actuator high control circuit and ground on the actuator low control circuit. Both circuits are controlled through output drivers within the ECM. When deactivated, both drivers are disabled. When activated, the high control circuit driver energizes the high-pressure fuel pump actuator, and the low control circuit driver Pulse-Width Modulates (PWM) the low control circuit to the ground. The ECM monitors the voltage on the circuits to detect a failure. The Diagnostic Trouble Code (DTC) will set if the ECM detects an open circuit in the high-pressure fuel pump actuator low control circuit.

OBDII Code P0090 2015 GMC Sierra - Fuel Pressure Regulator Control Circuit - AutoCodes.com — P0090 2015 GMC Sierra Code - Fuel Pressure Regulator Control Circuit

What does this mean?

What are the Possible Causes of the DTC P0090 2015 GMC Sierra?

Faulty High-Pressure Fuel Pump
High-Pressure Fuel Pump harness is open or shorted
High-Pressure Fuel Pump electrical circuit poor connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0090 2015 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 does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0090 2015 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 P0090 2015 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 P0090 2015 GMC Sierra Code

1. What are common symptoms of OBDII code P0090 in a 2015 GMC Sierra?

- Common symptoms include poor engine performance, rough idling, difficulty starting the vehicle, and a decrease in fuel efficiency.

2. What does OBDII code P0090 in a 2015 GMC Sierra indicate?

- OBDII code P0090 indicates a problem with the fuel pressure regulator control circuit in the vehicle.

3. What are the possible causes of OBDII code P0090 in a 2015 GMC Sierra?

- The possible causes of OBDII code P0090 include a faulty fuel pressure regulator, issues with the fuel pressure sensor, wiring problems, or a malfunctioning engine control module (ECM).

4. How can I diagnose the issue related to OBDII code P0090 in my 2015 GMC Sierra?

- To diagnose the issue, you can use a scan tool to check for the specific error code, inspect the wiring and connections related to the fuel pressure regulator, and test the fuel pressure sensor for proper operation.

5. Can I continue driving my 2015 GMC Sierra with OBDII code P0090 present?

- It is not recommended to continue driving the vehicle with OBDII code P0090 present, as it can lead to further damage to the fuel system and potentially cause more severe issues.

6. How can I repair OBDII code P0090 in my 2015 GMC Sierra?

- Repairing OBDII code P0090 may involve replacing the fuel pressure regulator, repairing any damaged wiring or connections, or resetting the ECM to clear the error code.

7. Is it possible to reset OBDII code P0090 in a 2015 GMC Sierra without fixing the underlying issue?

- While you can clear the error code temporarily by resetting the ECM, it is essential to address the root cause of the problem to prevent the code from reappearing.

8. How much does it typically cost to repair OBDII code P0090 in a 2015 GMC Sierra?

- The cost of repairing OBDII code P0090 can vary depending on the extent of the issue, but it may range from $200 to $500, including parts and labor.

9. Can a DIY enthusiast fix OBDII code P0090 in a 2015 GMC Sierra?

- While some DIY enthusiasts may be able to address simpler issues related to OBDII code P0090, more complex problems may require professional diagnosis and repair to ensure proper resolution.

10. How can I prevent OBDII code P0090 from occurring in my 2015 GMC Sierra in the future?

- To prevent OBDII code P0090, it is essential to perform regular maintenance on your vehicle, including checking the fuel system components for any signs of wear or damage.