P0442 2016 Chevrolet Silverado Code - Evaporative Emission System Small Leak Detected
Quick Answer
The engine off natural vacuum test is the small leak detection diagnostic for the evaporative emission system. 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 2016 Chevrolet Silverado indicates Evaporative Emission System Small Leak Detected.
- 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.
Code P0442 2016 Chevrolet Silverado Description
What are the Possible Causes of the DTC P0442 2016 Chevrolet Silverado?
- 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
- Leaking EVAP Canister
- Leaking EVAP System Hose
- Leaking Fuel Tank
- Faulty Fuel Tank Pressure Sensor
How to Fix the DTC P0442 2016 Chevrolet Silverado?
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
There is a factory service bulletin for all the models from 2000 through 2021. The factory states that there are seven critical connections that could likely lead to this DTC being set:
1. Purge tube to purge valve (at intake manifold)
2. Purge tube to chassis EVAP line (at the rear of the engine, near transmission)
3. Chassis EVAP line to canister (at canister)
4. Fuel tank load line to canister (at canister)
5. Vent valve line to vent valve (at vent valve)
6. Fuel tank load line jumper connection (near fuel tank)
7. Fuel tank cap is closed properly (at refuel compartment)
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0442 2016 Chevrolet Silverado 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 2016 Chevrolet Silverado code?
Need more information on how to fix the P0442 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0442 2016 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0442 2016 Chevrolet Silverado Code
1. What does the OBDII code P0442 mean on a 2016 Chevrolet Silverado?
P0442 indicates a small leak has been detected in the evaporative emission (EVAP) system, which is responsible for capturing and preventing fuel vapors from escaping into the atmosphere.
2. What are the common symptoms of code P0442 in a 2016 Chevrolet Silverado?
Common symptoms include an illuminated check engine light, a slight fuel smell near the vehicle, and no noticeable performance issues in most cases.
3. What causes the P0442 code to appear on a 2016 Chevrolet Silverado?
The most common causes are a loose or damaged gas cap, cracked EVAP hoses, a faulty purge valve, or a small leak in the EVAP canister or fuel tank.
4. Can a loose gas cap trigger the P0442 code on a 2016 Chevrolet Silverado?
Yes, a loose, damaged, or improperly tightened gas cap is one of the most common causes of the P0442 code.
5. How do I fix the P0442 code on a 2016 Chevrolet Silverado?
Start by inspecting and tightening the gas cap. If the issue persists, check for cracked or disconnected EVAP hoses, inspect the purge valve, and test the EVAP system for leaks.
6. Is it safe to drive a 2016 Chevrolet Silverado with the P0442 code?
Yes, it is generally safe to drive with the P0442 code, as it doesn’t typically affect performance. However, it’s important to address it promptly to ensure proper emissions control.
7. How can I diagnose the P0442 code on my 2016 Chevrolet Silverado?
You can diagnose the code by using an OBDII scanner to confirm the issue, inspecting the gas cap and EVAP hoses, and performing a smoke test to identify leaks in the EVAP system.
8. Can the P0442 code cause a failed emissions test on a 2016 Chevrolet Silverado?
Yes, the P0442 code can cause your Silverado to fail an emissions test because it indicates a leak in the EVAP system, which affects emissions control.
9. How much does it cost to repair the P0442 code on a 2016 Chevrolet Silverado?
The cost varies depending on the cause. Replacing a gas cap may cost $20, while repairing EVAP system components like hoses or valves could range from $100 to $500.
10. Will clearing the P0442 code solve the problem on my 2016 Chevrolet Silverado?
Clearing the code will temporarily turn off the check engine light, but the issue will return unless the underlying cause is resolved.
Discuss the causes and fixes for P0442 2016 Chevrolet Silverado OBDII Code
Code P0442 2016 Chevrolet Silverado comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
