AutoCodes – Ford – P0442 2011 Ford Fusion

P0442 2011 Ford Fusion Code - Evaporative Emission System Leak Detected Small Leak

Quick Answer

The Powertrain Control Module (PCM) monitors the complete evaporative emission (EVAP) control system for the presence of a small fuel vapor leak. 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
P0442 2011 Ford Fusion indicates Evaporative Emission System Leak Detected Small 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.
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Code Popularity 5,312
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0442 2011 Ford Fusion Description

The Powertrain Control Module (PCM) monitors the complete evaporative emission (EVAP) control system for the presence of a small fuel vapor leak. System failure occurs when a fuel vapor leak from an opening as small as 1.016 mm (0.040 in) is detected by the EVAP running loss monitor test.
OBDII Code P0442 2011 Ford Fusion - Evaporative Emission System Leak Detected Small Leak - AutoCodes.com
P0442 2011 Ford Fusion Code - Evaporative Emission System Leak Detected Small Leak

What are the Possible Causes of the DTC P0442 2011 Ford Fusion?

  • 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 P0442 2011 Ford Fusion?

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 P0442 2011 Ford Fusion 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 P0442 2011 Ford Fusion code?

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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.

Frequently Asked Questions about P0442 2011 Ford Fusion Code

What does the OBDII code P0442 mean for a 2011 Ford Fusion?

P0442 indicates a small leak has been detected in the evaporative emission (EVAP) system, which is responsible for controlling fuel vapors.

What are the common symptoms of a P0442 code in a 2011 Ford Fusion?

Common symptoms include the check engine light turning on, a slight fuel odor, and potentially reduced fuel efficiency.

What causes the P0442 code in a 2011 Ford Fusion?

Common causes include a loose or damaged gas cap, cracked or disconnected EVAP hoses, or a faulty purge or vent valve.

Can a loose gas cap trigger the P0442 code?

Yes, a loose, damaged, or improperly sealed gas cap is one of the most common causes of the P0442 code.

How can I fix the P0442 code on my 2011 Ford Fusion?

Start by tightening or replacing the gas cap. If the issue persists, inspect the EVAP hoses and valves for damage or leaks.

Is it safe to drive with the P0442 code on a 2011 Ford Fusion?

Yes, it is generally safe to drive, but the vehicle may fail emissions tests, and the issue should be addressed to avoid further complications.

How do you diagnose a P0442 code on a 2011 Ford Fusion?

Use an OBDII scanner to confirm the code, then inspect the gas cap, EVAP hoses, and valves for signs of leaks or damage.

What tools are needed to repair a P0442 code?

You may need an OBDII scanner, a smoke machine for leak testing, basic hand tools, and possibly replacement parts like a gas cap or EVAP components.

Can extreme weather conditions cause a P0442 code?

Yes, extreme heat or cold can sometimes cause seals or hoses in the EVAP system to fail, leading to a small leak.

How much does it cost to repair a P0442 code on a 2011 Ford Fusion?

Costs vary, but replacing a gas cap may cost $20-$30, while more extensive repairs for EVAP components could range from $100 to $500 or more.

Discuss the causes and fixes for P0442 2011 Ford Fusion OBDII Code

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