P0455 Lexus 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 Lexus 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 Lexus 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 Lexus?
- 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 Lexus?
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 Lexus 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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Frequently Asked Questions about P0455 Lexus Code
1. What are the common symptoms of OBDII code P0455 in a Lexus?
- Common symptoms include the check engine light coming on, a noticeable fuel smell near the vehicle, and potential issues with the vehicle's fuel efficiency.
2. What can cause the OBDII code P0455 in a Lexus?
- The code P0455 typically indicates a gross leak in the vehicle's evaporative emission control system, which can be caused by a loose or damaged gas cap, a cracked or disconnected hose, or a faulty purge valve.
3. How serious is the OBDII code P0455 in a Lexus?
- While the code P0455 may not cause immediate drivability issues, it can lead to increased emissions and potentially impact the vehicle's overall performance. It is recommended to address this code promptly to prevent further damage.
4. How can I diagnose the OBDII code P0455 in my Lexus?
- Diagnosing the code P0455 usually involves visually inspecting the fuel cap, hoses, and components of the evaporative emission control system for any visible damage or leaks. Using a smoke machine to detect leaks is also a common diagnostic method.
5. Can I drive my Lexus with the OBDII code P0455?
- It is generally safe to drive the vehicle with the code P0455, but it is advisable to have the issue diagnosed and repaired as soon as possible to avoid potential emissions problems and decreased fuel efficiency.
6. How can I repair the OBDII code P0455 in my Lexus?
- Repairing the code P0455 often involves tightening or replacing the gas cap, inspecting and repairing any damaged hoses, checking and replacing the purge valve if necessary, and clearing the code with an OBDII scanner.
7. Will resetting the check engine light fix the OBDII code P0455 in a Lexus?
- Simply resetting the check engine light without addressing the underlying issue causing the code P0455 will not solve the problem. It is essential to diagnose the cause of the code and perform the necessary repairs.
8. Can a Lexus dealership fix the OBDII code P0455?
- Yes, a Lexus dealership or a qualified mechanic with experience in diagnosing and repairing evaporative emission control system issues can effectively address the code P0455 in your Lexus.
9. How much does it cost to repair the OBDII code P0455 in a Lexus?
- The cost of repairing the code P0455 in a Lexus can vary depending on the specific cause of the issue, the needed parts, and the labor rates of the repair shop. On average, the repair cost can range from $100 to $500.
10. What preventive measures can I take to avoid the OBDII code P0455 in my Lexus?
- To prevent the code P0455, make sure to tighten the gas cap securely after refueling, regularly inspect the hoses and components of the evaporative emission control system for any damage, and address any fuel system issues promptly.
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