Toyota Error Code P1455: How to Fix It
Medium 1-3 hours Low Severity
Verified June 2026
- Error Code
- P1455
- Brand
- Toyota
- Product Type
- automotive
- Severity
- Low
- DIY Difficulty
- Medium
- Estimated Fix Time
- 1-3 hours
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Tools You'll Need
- OBD2 scanner
- Basic hand tools
- Multimeter
- EVAP smoke machine (optional)
- Jack and jack stands
- Flashlight or work light
How to Fix Error Code P1455
-
Check the gas cap
Turn off the engine and allow it to cool before removing the gas cap to avoid fuel vapors. -
Scan for additional codes
-
Inspect EVAP vacuum hoses
Ensure the vehicle is on level ground and use jack stands if you need to go under the car. -
Check the charcoal canister
-
Test the purge solenoid
Be careful around moving engine parts and hot surfaces. -
Perform EVAP system smoke test
Only perform this test if you have the proper equipment and experience with EVAP systems. -
Replace faulty components
Dispose of old EVAP components properly as they contain activated carbon and fuel vapors.
Parts You May Need
Gas cap
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EVAP vacuum hoses
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Charcoal canister
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Purge solenoid valve
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OBD2 scanner
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Gas cap
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EVAP vacuum hoses
Check Price on Amazon
Charcoal canister
Check Price on Amazon
Purge solenoid valve
Check Price on Amazon
OBD2 scanner
Check Price on Amazon
Gas cap
Check Price on Amazon
EVAP vacuum hoses
Check Price on Amazon
Charcoal canister
Check Price on Amazon
Purge solenoid valve
Check Price on Amazon
OBD2 scanner
Check Price on Amazon
Gas cap
Check Price on Amazon
EVAP vacuum hoses
Check Price on Amazon
Charcoal canister
Check Price on Amazon
Purge solenoid valve
Check Price on Amazon
OBD2 scanner
Check Price on Amazon
Gas cap
Check Price on Amazon
EVAP vacuum hoses
Check Price on Amazon
Charcoal canister
Check Price on Amazon
Purge solenoid valve
Check Price on Amazon
OBD2 scanner
Check Price on Amazon
Gas cap
Check Price on Amazon
EVAP vacuum hoses
Check Price on Amazon
Charcoal canister
Check Price on Amazon
Purge solenoid valve
Check Price on Amazon
OBD2 scanner
Check Price on Amazon
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When to Call a Professional
Call a professional mechanic if you're unable to locate the leak after basic inspection, if the smoke test reveals multiple leaks, or if you're uncomfortable working under the vehicle. Professional diagnosis is also recommended if multiple EVAP codes are present or if the problem persists after replacing obvious faulty components.Frequently Asked Questions
Can I drive my Toyota with P1455 error code?
Yes, you can typically drive safely with P1455 as it's an emissions-related code that doesn't affect engine performance. However, you should fix it promptly to avoid failing emissions tests and to prevent potential fuel vapor leaks.
What causes Toyota P1455 error code?
Common causes include a loose or damaged gas cap, cracked EVAP hoses, a faulty charcoal canister, a malfunctioning purge solenoid, or small leaks in the EVAP system that allow fuel vapors to escape.
How much does it cost to fix P1455 on a Toyota?
Costs vary depending on the root cause. A new gas cap costs $15-30, EVAP hoses cost $20-50, a purge solenoid costs $50-150, and a charcoal canister costs $100-300. Professional diagnosis typically costs $100-150.
Will P1455 cause my Toyota to fail emissions testing?
Yes, P1455 will likely cause your vehicle to fail emissions testing since it indicates a problem with the evaporative emissions control system. The error code must be resolved and the system must pass readiness monitors before testing.
How do I clear P1455 code on Toyota?
Use an OBD2 scanner to clear the code after making repairs. However, simply clearing the code without fixing the underlying problem will cause it to return. You must address the root cause first, then clear the code and complete a drive cycle.