AutoCodes – Jaguar – P0455 Jaguar

P0455 Jaguar Code - Evaporative Emission Control System Leak Detected Gross Leak

Quick Answer

This diagnosis detects leaks in the Evaporative Emission System (EVAP) purge line using engine intake manifold vacuum. Common causes include Missing or loose 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 Jaguar indicates Evaporative Emission Control System Leak Detected Gross Leak.
Common causes: Common causes include Missing or loose 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.

Save to My Repairs Step-by-Step Diagnostic Guide My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,115

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 25, 2024

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0455 Jaguar Description

This diagnosis detects leaks in the Evaporative Emission System (EVAP) purge line using engine intake manifold vacuum. If pressure does not increase, the Engine Control Module (ECM) will check for leaks in the line between the fuel tank and EVAP canister purge volume control solenoid valve under the following vacuum test condition.
The vacuum cut valve bypass valve is opened to clear the line between the fuel tank and the EVAP canister purge volume control solenoid valve. The EVAP canister vent control valve will then be closed to shut the EVAP purge line off. The EVAP canister purge volume control solenoid valve is opened to depressurize the EVAP purge line using intake manifold vacuum. After this depressurization is implemented, the EVAP canister purge volume control solenoid valve will be closed.

OBDII Code P0455 Jaguar - Evaporative Emission Control System Leak Detected Gross Leak - AutoCodes.com — P0455 Jaguar Code - Evaporative Emission Control System Leak Detected Gross Leak

What does this mean?

What are the Possible Causes of the DTC P0455 Jaguar?

Missing or loose fuel cap
Incorrect fuel filler cap used
Fuel filler cap remains open or fails to close
Foreign matter caught in fuel filler cap
EVAP canister or fuel tank leaks
EVAP system hose leaking
Fuel tank leaking

How to Fix the DTC P0455 Jaguar?

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 does this mean?

Code Tech Notes

The P0455 it's a quite common code because the code is set if the gas cap is loose or missing. Start by tightening the gas cap and clearing the code. In most cases, the code can be clear by disconnecting the car battery for about 30 minutes.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0455 Jaguar 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 P0455 Jaguar code?

Need more information on how to fix the P0455 Jaguar code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0455 Jaguar code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0455 Jaguar Code

1. What does OBDII code P0455 on a Jaguar mean?

- OBDII code P0455 indicates that the Evaporative Emission Control System has detected a gross leak.

2. What are the common symptoms of a P0455 code in a Jaguar?

- Common symptoms of a P0455 code in a Jaguar include the check engine light coming on, a strong fuel odor, and decreased fuel efficiency.

3. What are the possible causes of a P0455 code in a Jaguar?

- Causes of a P0455 code in a Jaguar can include a loose or damaged gas cap, a leak in the fuel tank, a faulty purge valve, or cracked hoses in the evaporative emission system.

4. How serious is a P0455 code on a Jaguar?

- While a P0455 code may not cause immediate drivability issues, it can negatively impact fuel economy and emissions. It is important to diagnose and repair the issue to prevent further damage.

5. How do I diagnose a P0455 code in a Jaguar?

- Diagnosing a P0455 code in a Jaguar involves visually inspecting the fuel cap, checking for leaks in the fuel tank and hoses, testing the purge valve, and using a smoke machine to detect leaks in the evaporative emission system.

6. Can I still drive my Jaguar with a P0455 code?

- It is generally safe to drive your Jaguar with a P0455 code, but it is recommended to address the issue promptly to avoid potential fuel economy and emissions problems.

7. How can I repair a P0455 code in a Jaguar?

- Repairing a P0455 code in a Jaguar may involve tightening or replacing the gas cap, repairing or replacing damaged hoses, fixing a leak in the fuel tank, or replacing a faulty purge valve.

8. Will a P0455 code reset itself?

- In some cases, a P0455 code may reset itself after a few driving cycles if the issue is resolved. However, it is recommended to diagnose and repair the problem to prevent it from recurring.

9. Can a P0455 code be triggered by a loose gas cap?

- Yes, a loose or improperly sealed gas cap is a common cause of a P0455 code in a Jaguar. Ensure the gas cap is tightened properly before further diagnostics.

10. How can I prevent a P0455 code from appearing in my Jaguar?

- To prevent a P0455 code in your Jaguar, make sure to tighten the gas cap securely after refueling, perform regular maintenance on the evaporative emission system, and address any fuel leaks promptly.