AutoCodes – Chevrolet – P0090 2018 Chevrolet Silverado

P0090 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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 1,352

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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado - Fuel Pressure Regulator Control Circuit - AutoCodes.com — P0090 2018 Chevrolet Silverado Code - Fuel Pressure Regulator Control Circuit

What does this mean?

What are the Possible Causes of the DTC P0090 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado?

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 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado code?

Need more information on how to fix the P0090 2018 Chevrolet Silverado 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 P0090 2018 Chevrolet Silverado Code

1. What does OBDII code P0090 on a 2018 Chevrolet Silverado indicate?

The code P0090 in a 2018 Chevrolet Silverado refers to an issue with the Fuel Pressure Regulator Control Circuit.

2. What are common symptoms of OBDII code P0090 in a 2018 Chevrolet Silverado?

Common symptoms of code P0090 may include rough idling, poor engine performance, decreased fuel efficiency, and potential stalling.

3. What are the possible causes of OBDII code P0090 in a 2018 Chevrolet Silverado?

Possible causes of code P0090 can include a faulty fuel pressure regulator, damaged wiring or connectors in the circuit, or a problem with the PCM (Powertrain Control Module).

4. How can I diagnose the cause of OBDII code P0090 in my 2018 Chevrolet Silverado?

Diagnosing code P0090 may involve visually inspecting the wiring and connectors, testing the fuel pressure regulator, and using a scan tool to monitor the system while the engine is running.

5. Can I continue driving my 2018 Chevrolet Silverado with OBDII code P0090?

It is not recommended to drive your vehicle with an unresolved P0090 code, as it can lead to more serious engine issues and potential safety concerns.

6. How can I repair OBDII code P0090 in my 2018 Chevrolet Silverado?

Repairing code P0090 may involve replacing the fuel pressure regulator, repairing or replacing damaged wiring or connectors, or reprogramming the PCM if necessary.

7. Are there any DIY tips for fixing OBDII code P0090 in a 2018 Chevrolet Silverado?

While some may attempt to diagnose and fix code P0090 themselves, it is recommended to consult a professional mechanic due to the complexities involved in the fuel system.

8. Is resetting the OBDII system an effective way to clear code P0090 in a 2018 Chevrolet Silverado?

Simply resetting the system may temporarily clear the code, but it will likely reappear if the underlying issue causing P0090 is not addressed.

9. How much does it typically cost to repair OBDII code P0090 in a 2018 Chevrolet Silverado?

The cost of repairing code P0090 can vary depending on the specific cause and required repairs, but it may range from a few hundred to over a thousand dollars.

10. Can a mechanic easily fix OBDII code P0090 in a 2018 Chevrolet Silverado?

A qualified mechanic with experience in diagnosing and repairing fuel system issues should be able to effectively address and fix code P0090 in a 2018 Chevrolet Silverado.