AutoCodes – Mercury – P1455 Mercury

P1455 Mercury Code - Evaporative Emission Control System Gross Leak Detected

Quick Answer

Evaporative Emission Control (EVAP) monitor enabled and Engine Control Module (ECM) detected a gross leak in the EVAP system Common causes include Failed or missing gas cap, Failed Fuel Tank Pressure (FTP) sensor, Line/system blocked or kinked. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1455 Mercury indicates Evaporative Emission Control System Gross Leak Detected.
Common causes: Common causes include Failed or missing gas cap, Failed Fuel Tank Pressure (FTP) sensor, Line/system blocked or kinked.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 1,139

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 23, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1455 Mercury Description

Evaporative Emission Control (EVAP) monitor enabled and Engine Control Module (ECM) detected a gross leak in the EVAP system

OBDII Code P1455 Mercury - Evaporative Emission Control System Gross Leak Detected - AutoCodes.com — P1455 Mercury Code - Evaporative Emission Control System Gross Leak Detected

What does this mean?

What are the Possible Causes of the DTC P1455 Mercury?

Failed or missing gas cap
Failed Fuel Tank Pressure (FTP) sensor
Line/system blocked or kinked

How to Fix the DTC P1455 Mercury?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1455 Mercury 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 P1455 Mercury code?

Need more information on how to fix the P1455 Mercury code? Get Access to Factory Service Manuals

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Get the P1455 Mercury 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 P1455 Mercury Code

1. What are the common symptoms of OBDII code P1455 on a Mercury?

Common symptoms include the check engine light illuminating, a strong fuel odor around the vehicle, and potential issues with vehicle performance.

2. What typically causes the OBDII code P1455 in a Mercury?

The most common cause of code P1455 is a gross leak in the evaporative emission control system, often due to a loose or damaged gas cap.

3. How can I diagnose a gross leak in the evaporative emission control system on my Mercury?

You can visually inspect the gas cap for any signs of damage or looseness, check the integrity of the hoses and connections in the system, and use a smoke machine to detect leaks.

4. Can a faulty purge valve trigger code P1455 in a Mercury?

Yes, a malfunctioning purge valve can cause an evaporative emission control system gross leak, leading to the triggering of code P1455 on a Mercury.

5. Is it safe to continue driving with OBDII code P1455 present in a Mercury?

While the vehicle may still be operable, it is not recommended to drive with code P1455 as it can affect fuel efficiency and the overall performance of the vehicle.

6. How can I reset OBDII code P1455 on my Mercury after repairing the issue?

After fixing the root cause of the problem, you can reset the code using an OBDII scanner or by disconnecting the car's battery for a few minutes.

7. Are there any common DIY repair tips for addressing code P1455 on a Mercury?

DIY repair tips include ensuring the gas cap is tightened properly, inspecting for visible leaks, and checking the condition of hoses and connections in the evaporative emission control system.

8. Will code P1455 on a Mercury cause a vehicle to fail an emissions test?

Yes, code P1455 typically indicates an issue with the evaporative emission control system, which can cause a vehicle to fail an emissions test due to increased emissions.

9. How much does it cost to repair OBDII code P1455 on a Mercury?

The cost of repairing code P1455 can vary depending on the root cause of the issue, but it may range from $100 to $500, including parts and labor.

10. Can I prevent OBDII code P1455 from reoccurring on my Mercury?

Regularly checking and maintaining the gas cap, inspecting the evaporative emission control system components, and addressing any issues promptly can help prevent code P1455 from reoccurring on your Mercury.