P2450 — EVAP System Switching Valve Performance/Stuck Open

What Does P2450 Mean?

P2450 is a diagnostic trouble code indicating: EVAP System Switching Valve Performance/Stuck Open. This code relates to the powertrain system. It has been reported in NHTSA complaints across 2 different vehicle models.

Common Causes

🔍 EVAP system component failure
🔍 Sensor or control module malfunction

Real Owner Reports

From NHTSA complaint database — actual owner descriptions.

"There are two recurring issues effecting my truck. These have been ongoing for 6 months, since March of this year. I have been to my dealer Lum's in Warrenton, Oregon 8 times for this. They have been unavailable to fix the issues and told me they needed a Toyota factory person to fix the issues bec"
— Toyota Tundra owner, 02/22/2024

"NHTSA COMPLAINT - 2017 Ford Fusion Energi Titanium (VIN: REDACTED) - [XXX] (Collision) Q1: FAILED COMPONENT Battery Energy Control Module (BECM) and hybrid battery cell balancing circuits failed post-collision. Per Ford Recall 23V-440, Current Interrupt Device causes excess voltage, fire risk, toxi"
— Ford Fusion owner, 01/16/2024

Source: NHTSA Complaints Database

Most Reported Vehicles for P2450

Based on NHTSA owner complaint data.

#	Vehicle	Reports
1	TOYOTA TUNDRA
2	FORD FUSION

Frequently Asked Questions

Can I drive with this code?

It depends on the severity. If the vehicle runs normally, short trips are usually OK. If you notice performance issues, drivability problems, or warning lights beyond the check engine light, get it checked soon.

Will this code clear itself?

Some codes clear automatically after the underlying issue is fixed and several drive cycles pass. But the root cause must be addressed first.

How do I find the exact cause?

A code alone doesn't pinpoint the failed part. You need a diagnostic scan ($50-150 at most shops) that reads freeze frame data and live sensor readings to identify the specific component.

What To Do Next

Possible Fixes

🔧 Have the code scanned with a professional-grade scanner to read freeze frame data
🔧 Check and tighten the gas cap — replace if cracked or damaged ($5-15)
🔧 Test the relevant sensor(s) with a multimeter before replacing
🔧 If DIY repair isn't feasible, get a diagnostic from a trusted mechanic ($50-150)

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P2450: EVAP System Switching Valve Performance/Stuck Open