Engine-Codes - Lincoln - P1442 LINCOLN

P1442 LINCOLN - EVAP System Small Leak Detected

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P1442 LINCOLN Possible Causes

  • Open or faulty gas cap
  • Small leak in EVAP system-Check vent solenoid
  • Faulty hose connection or leak in line

How is the P1442 LINCOLN code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Tech Notes

There is a factory service bulletin for the following Lincoln vehicles:
1997-1998 Lincoln Mark VIII
1997-2002 Lincoln Continental
1997-2003 Lincoln Town Car
2000-2003 Lincoln LS
1998-2003 Lincoln Navigator
2002-2003 Lincoln Blackwood
Lincoln Factory Service Bulletin OBDII Code P1442

What is the cost to diagnose the P1442 LINCOLN code

Labor: 1.0

The cost to diagnose the P1442 LINCOLN code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1442 LINCOLN Meaning

This diagnosis detects leaks in the Evaporative Emission System (EVAP) purge line using an 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.
The Diagnostic Trouble Code (DTC) will set when the EVAP control system has a small leak such as the loose fuel filler cap, the EVAP control system does not operate properly.

More Information

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