P0455 Scion Code - Evaporative Emission Control System Gross Leak Detected
Quick Answer
5 hours after the ignition switch is turned off, the leak detection pump creates negative pressure (vacuum) in the Evaporative Emission (EVAP) system. Common causes include Missing or loose filler fuel cap, Incorrect fuel filler cap used, Fuel filler cap remains open or fails to close. 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
- P0455 Scion indicates Evaporative Emission Control System Gross Leak Detected.
- Common causes
- Common causes include Missing or loose filler fuel cap, Incorrect fuel filler cap used, Fuel filler cap remains open or fails to close.
- 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 P0455 Scion Description
The Canister Pump Module is attached to the EVAP Canister and contains the Canister Pressure Sensor, the Leak Detection Pump, and the Vent Valve.
What are the Possible Causes of the DTC P0455 Scion?
- Missing or loose filler fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Leakage from canister pump module
- Leakage from fuel tank
- Leakage from canister
How to Fix the DTC P0455 Scion?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0455 Scion 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.
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Information for Specific Scion Models
- P0455 2005 Scion xB — EVAP System Gross Leak Detected
- P0455 2006 Scion xB — EVAP System Gross Leak Detected
- P0455 2007 Scion xB — EVAP System Gross Leak Detected
Frequently Asked Questions about P0455 Scion Code
No Frequently Asked Questions about P0455 Scion Code found.
Discuss the causes and fixes for P0455 Scion OBDII Code
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P0455 is a leak issue which normally you can expect the gas cap oring has gone bad or a bad vacuum hose in the evap system. However, do not forget to check something else. Let me tell you about a smog test I just got on my 2011 Toyota sienna. The car runs like new, very clean and low mileage. I was planning to sell it but a person who called about it reminded me that I had to smog first before it sold. That day, I took it down and had it smogged which passed with flying colors. What I did not expect was filling the car with gas and parking it in my driveway and washing, cleaning and shining chrome. With less than a mile since the smog was done, all of a sudden all lights went off on the dash. My code reader read P0451. I checked all sensors thinking he unplugged them or a vacuum line, starting at engine and working my way back to rear of car. I had found something strange under the rear wheel which looked like a jack mark on what looked like metal but was plastic. Upon further examination, there were dried chemical marks and behind the plastic was my gas tank fuel line hose. After removing this cover, I found two holes cut into this hose from the plastic cover which must of been leaking until all the gas drained out. I had replaced the gas fill line to the tank and heated up the plastic cover to correct the bends and breaks in the plastic, and put on a label stating not to jack here, FUEL LINE. Stared the car and checked the code reader which now reads cleared. In reality, Toyota should have made this cover in metal or aluminum or some sort of protection to prevent this issue. The put an arrow on the side of the car at bottom indicating to jack here. So I do not blame the smog guy. The lip you can jack from is very small but thos plastc cover looks like the frame of the car. I bet this happens to more cars then we know. Rob
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