Code P0442Monitor
EVAP Emission Control System Small Leak Detected
Your gas tank vapor system has a tiny leak - like a pinhole in a balloon. Won't affect driving but fails emissions tests.
Need This Code Diagnosed?
Free code scanning • Professional diagnosis • Fair pricing
Monitor and Maintain
This issue is not immediately critical but should be addressed at your next service.
Recommended Actions:
- •Note the code for your next service
- •Monitor for any changes in symptoms
- •Can combine with next scheduled maintenance
- •Check if code returns after clearing
What This Code Means
A small leak has been detected in the evaporative emission control system.
"Your gas tank vapor system has a tiny leak - like a pinhole in a balloon. Won't affect driving but fails emissions tests."
Common Causes
Loose or damaged gas cap
Small crack in EVAP hoses
Faulty purge valve
Leaking fuel tank
Damaged charcoal canister
Symptoms You May Notice
Professional Diagnostic Steps
Our technicians will perform these checks:
Commonly Affects These Vehicles
Note: This code can appear in any vehicle. These are just the most common.
Repair Cost Breakdown
Why Choose Us?
- ASE Certified Technicians
- Latest Diagnostic Equipment
- Warranty on All Repairs
- Upfront, Honest Pricing
- Same Day Service Available
Frequently Asked Questions About Code P0442
Can I keep driving with code P0442?
No immediate danger - check gas cap first, then diagnose at your convenience
How much will it cost to fix P0442?
The repair approach depends on the specific cause and your vehicle.The most common cause (loose or damaged gas cap) usually costs on the lower end of this range.
Will code P0442 clear itself?
While the check engine light may turn off if the condition improves temporarily, the code will remain stored in your vehicle's computer. The underlying issue still needs to be addressed to prevent the code from returning and potentially causing damage.
Is P0442 covered under warranty?
Many emissions-related repairs are covered under federal emissions warranty (8 years/80,000 miles for catalytic converters and ECM). Check with your dealer.
Don't Guess - Get Professional Diagnosis
Code P0442 can have multiple causes. Our diagnostic process ensures we fix the right problem the first time.