AutoCodes – Lincoln – P1455 Lincoln

P1455 Lincoln 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 Lincoln 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 994

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
Comments
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Code P1455 Lincoln Description

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

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

What does this mean?

What are the Possible Causes of the DTC P1455 Lincoln?

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

How to Fix the DTC P1455 Lincoln?

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 Lincoln 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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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.