AutoCodes – Nissan – P0451 2012 Nissan Pathfinder

P0451 2012 Nissan Pathfinder Code - EVAP Control System Pressure Sensor Performance

Quick Answer

The Evaporative Emission System (EVAP) control system pressure sensor detects pressure in the purge line. Common causes include Faulty Evaporative Emission System (EVAP) Pressure Sensor, Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted, Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
P0451 2012 Nissan Pathfinder indicates EVAP Control System Pressure Sensor Performance.
Common causes
Common causes include Faulty Evaporative Emission System (EVAP) Pressure Sensor, Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted, Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
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Code Popularity 2,655
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 28, 2024
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Code P0451 2012 Nissan Pathfinder Description

The Evaporative Emission System (EVAP) control system pressure sensor detects pressure in the purge line. The sensor output voltage to the Engine Control Module (ECM) increases as pressure increases. The EVAP control system pressure sensor is not used to control the engine system. It is used only for on board diagnosis.
OBDII Code P0451 2012 Nissan Pathfinder - EVAP Control System Pressure Sensor Performance - AutoCodes.com
P0451 2012 Nissan Pathfinder Code - EVAP Control System Pressure Sensor Performance

What are the Possible Causes of the DTC P0451 2012 Nissan Pathfinder?

  • Faulty Evaporative Emission System (EVAP) Pressure Sensor
  • Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted
  • Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P0451 2012 Nissan Pathfinder?

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 P0451 2012 Nissan Pathfinder 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 P0451 2012 Nissan Pathfinder code?

Need more information on how to fix the P0451 2012 Nissan Pathfinder code? Get Access to Factory Service Manuals

Need Help with the 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 P0451 2012 Nissan Pathfinder Code

1. What does the OBDII code P0451 on a 2012 Nissan Pathfinder indicate?

The OBDII code P0451 on a 2012 Nissan Pathfinder indicates an issue with the EVAP Control System Pressure Sensor Performance.

2. What are common symptoms of the P0451 code in a 2012 Nissan Pathfinder?

Common symptoms of the P0451 code in a 2012 Nissan Pathfinder include the check engine light coming on, decreased fuel efficiency, and potential difficulty starting the vehicle.

3. What are the possible causes of the P0451 code in a 2012 Nissan Pathfinder?

Possible causes of the P0451 code in a 2012 Nissan Pathfinder include a faulty EVAP control system pressure sensor, a damaged or corroded sensor connector, or a leak in the EVAP system.

4. How can I diagnose the P0451 code in a 2012 Nissan Pathfinder?

To diagnose the P0451 code in a 2012 Nissan Pathfinder, you can start by visually inspecting the EVAP system components, checking the sensor connector for any damage, and using a scan tool to monitor sensor readings.

5. How can I repair the P0451 code in a 2012 Nissan Pathfinder?

Repairing the P0451 code in a 2012 Nissan Pathfinder may involve replacing the EVAP control system pressure sensor, repairing or replacing the sensor connector, and fixing any leaks in the EVAP system.

6. Can I drive my 2012 Nissan Pathfinder with the P0451 code?

It is generally safe to drive your 2012 Nissan Pathfinder with the P0451 code, but it is recommended to have the issue diagnosed and repaired as soon as possible to prevent potential damage to the vehicle's emission control system.

7. Is it possible to reset the P0451 code in a 2012 Nissan Pathfinder without fixing the issue?

While you can clear the code using an OBDII scanner, it is not recommended to reset the code without addressing the underlying problem, as it may lead to recurring issues and cause further damage to the vehicle over time.

8. How much does it typically cost to repair the P0451 code on a 2012 Nissan Pathfinder?

The cost of repairing the P0451 code on a 2012 Nissan Pathfinder can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor.

9. Can a DIY enthusiast fix the P0451 code in a 2012 Nissan Pathfinder?

Depending on your level of automotive knowledge and skills, it may be possible to address the P0451 code in a 2012 Nissan Pathfinder as a DIY project by following repair guides and using the necessary tools.

10. How often does the P0451 code occur in a 2012 Nissan Pathfinder?

The P0451 code can occur sporadically or more frequently depending on various factors such as driving conditions, maintenance history, and the overall health of the vehicle's emission control system.

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