AutoCodes – Nissan – P0090 Nissan

P0090 Nissan Code - High Pressure Fuel Pump Performance

Quick Answer

The high pressure fuel pump is installed at the front of the engine bank 2 side and activated by the camshaft. Common causes include Fualty High Pressure Fuel Pump, Faulty Low Pressure Fuel Pump, High Pressure Fuel Pump 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: P0090 Nissan indicates High Pressure Fuel Pump Performance.
Common causes: Common causes include Fualty High Pressure Fuel Pump, Faulty Low Pressure Fuel Pump, High Pressure Fuel Pump 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 23,415

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 Oct 25, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0090 Nissan Description

The high pressure fuel pump is installed at the front of the engine bank 2 side and activated by the camshaft. Engine Control Module (ECM) controls the high pressure fuel pump control solenoid valve built into the high pressure fuel pump and adjusts the amount of discharge by changing the suction timing of the low pressure fuel.

OBDII Code P0090 Nissan - High Pressure Fuel Pump Performance - AutoCodes.com — P0090 Nissan Code - High Pressure Fuel Pump Performance

What does this mean?

What are the Possible Causes of the DTC P0090 Nissan?

Fualty High Pressure Fuel Pump
Faulty Low Pressure Fuel Pump
High Pressure Fuel Pump harness is open or shorted
High Pressure Fuel Pump circuit poor electrical connection
Low Pressure Fuel Pump harness is open or shorted
Low Pressure Fuel Pump circuit poor electrical connection

How to Fix the DTC P0090 Nissan?

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 P0090 Nissan 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 Nissan code?

Need more information on how to fix the P0090 Nissan code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0090 Nissan code diagnosed by a professional: Find a repair shop in your area

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 Nissan Code

1. What are the common symptoms of OBDII code P0090 in a Nissan related to high pressure fuel pump performance?

Symptoms may include a lack of power, engine misfires, rough idling, stalling, and difficulty starting the vehicle.

2. What are the possible causes of OBDII code P0090 in a Nissan indicating high pressure fuel pump performance issues?

Causes can include a failing high pressure fuel pump, clogged fuel filter, fuel line restrictions, wiring issues, or a faulty fuel pressure sensor.

3. How can I diagnose OBDII code P0090 in a Nissan related to high pressure fuel pump performance?

Diagnosis involves checking the fuel pressure with a gauge, inspecting the fuel pump, examining the fuel lines, and testing the fuel pressure sensor.

4. Can a clogged fuel filter trigger OBDII code P0090 in a Nissan?

Yes, a clogged fuel filter can restrict fuel flow and lead to high pressure fuel pump performance issues, potentially triggering the P0090 code.

5. Is it safe to continue driving with OBDII code P0090 in a Nissan indicating high pressure fuel pump performance problems?

It is not recommended to drive the vehicle with this code present, as it can result in poor engine performance and potential damage if left unresolved.

6. Can a DIY enthusiast repair OBDII code P0090 in a Nissan related to high pressure fuel pump performance?

While some basic checks like inspecting for fuel leaks or loose connections can be done, diagnosing and repairing the high pressure fuel pump itself may require professional expertise.

7. Are there any tips for preventing OBDII code P0090 in a Nissan due to high pressure fuel pump issues?

Regular maintenance, such as replacing the fuel filter at recommended intervals and using quality fuel, can help prevent high pressure fuel pump performance problems.

8. Does weather or environmental conditions affect the likelihood of OBDII code P0090 in a Nissan being triggered?

Extreme temperatures or poor fuel quality can potentially impact the performance of the high pressure fuel pump and contribute to triggering the P0090 code.

9. How can I reset OBDII code P0090 in a Nissan after addressing high pressure fuel pump performance issues?

After repairing the root cause, a scan tool can be used to clear the trouble code and reset the vehicle's onboard computer system.

10. Should I seek professional help for OBDII code P0090 in a Nissan, or can I attempt to fix it myself?

Due to the complexity of high pressure fuel system repairs, it is advisable to consult a qualified mechanic or technician to properly diagnose and address the issues related to the P0090 code.