P0451 2011 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 2011 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.
Code P0451 2011 Nissan Pathfinder Description
What are the Possible Causes of the DTC P0451 2011 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 2011 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 2011 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 2011 Nissan Pathfinder code?
Need more information on how to fix the P0451 2011 Nissan Pathfinder code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0451 2011 Nissan Pathfinder code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0451 2011 Nissan Pathfinder Code
What does the OBDII code P0451 mean for a 2011 Nissan Pathfinder?
P0451 indicates an issue with the EVAP (Evaporative Emission Control) system pressure sensor, specifically that its performance is outside the expected range.
What are the common symptoms of a P0451 code?
Common symptoms include an illuminated check engine light, decreased fuel efficiency, and, in some cases, difficulty refueling or noticeable fuel odors.
What causes the P0451 code to appear?
Common causes include a faulty EVAP pressure sensor, damaged or disconnected wiring, a clogged or leaking EVAP vent valve, or a malfunctioning fuel tank pressure sensor.
Can I drive my 2011 Nissan Pathfinder with a P0451 code?
Driving with a P0451 code is generally safe, but it may affect your vehicle’s emissions and fuel efficiency. It's best to address the issue promptly to avoid potential complications.
How is the P0451 code diagnosed?
A mechanic will use an OBDII scanner to confirm the code, inspect the EVAP system components, check for damaged wiring, and test the pressure sensor for proper functionality.
What repairs are typically needed for a P0451 code?
Repairs may include replacing the EVAP pressure sensor, fixing or replacing damaged wiring, cleaning or replacing the EVAP vent valve, or repairing leaks in the EVAP system.
Can a loose gas cap cause the P0451 code?
While a loose gas cap is more likely to trigger other EVAP-related codes, it’s worth checking and tightening the cap to rule it out as a contributing factor.
How much does it cost to fix the P0451 code on a 2011 Nissan Pathfinder?
Repair costs vary, but replacing the EVAP pressure sensor typically costs $150–$300, including parts and labor. Wiring or valve repairs may cost more depending on the extent of the issue.
How can I prevent the P0451 code from occurring?
Regularly inspect your EVAP system components, ensure the gas cap is properly tightened, and address any fuel system issues promptly to maintain system integrity.
Will clearing the P0451 code solve the problem?
Clearing the code may turn off the check engine light temporarily, but the issue will return if the underlying problem is not resolved.
Discuss the causes and fixes for P0451 2011 Nissan Pathfinder OBDII Code
Code P0451 2011 Nissan Pathfinder comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
