2019 Nissan Versa Smells Like Gas

Common Causes of Gas Smells in Your 2019 Nissan Versa and How to Address Them Safely

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
15% chance it's the
Gas Cap
0%
40% chance it's the
Emissions Control System
0%
45% chance it's
Something else
The most common reasons a 2019 Nissan Versa smells like gas are the gas cap, the fuel system, or the emissions control system.
  • Gas Cap: A loose or damaged gas cap can cause fuel vapors to escape, triggering the check engine light and potentially affecting fuel system pressure.
  • Emissions Control System: A faulty emissions control system can lead to increased hydrocarbon emissions and trigger the check engine light due to malfunctioning components like the EGR valve or O2 sensors.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2019 Nissan Versa smells like gas?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

A failing catalytic converter can cause a vehicle to fail emissions tests and turn on the check engine light. The exhaust might have an unusual smell. A restricted catalytic converter can result in a loss of engine power.

» LEARN MORE: How to tell if your catalytic converter is failing

The check engine light will illuminate any time there is a failed EVAP system test. This will be indicated by the various on-board diagnostics trouble codes that are stored in the vehicle's memory. Also, in some models, there may be a popping sound accompanying the check engine light, as the leak detection pump continuously attempts to pressurize the fuel tank. The canister may also cause difficulty starting the engine, a rough idle, and poor fuel mileage.

The check engine light will illuminate any time there is a failed EVAP system test. This will be indicated by the various on-board diagnostics trouble codes that are stored in the vehicle's memory. Also, in some models, there may be a popping sound accompanying the check engine light, as the leak detection pump continuously attempts to pressurize the fuel tank. A fuel tank leak may also cause difficulty starting the engine, a rough idle, and poor fuel mileage. When a fuel tank is simply corroded to the point of failure, the exterior tank condition rarely shows damage. The inside of the fuel tank will be rusted or corroded, and rust flakes or other debris may be floating in the fuel.

For most vehicles, the only symptom will be a check engine light or fuel tank filler cap light illuminating on the driver instrument cluster. This is to signal that there is an evaporative emissions (EVAP) leak. In some situations, the vehicle may take longer than normal to start, or, more rarely, the engine may not start at all. on-board diagnostic (OBD) trouble codes will refer to EVAP system failures such as a small or massive EVAP system leak. Lastly, the powertrain control module may notice a lean running condition, which could even lead to random and infrequent misfires.

What are the potential causes of a gas smell in a 2019 Nissan Versa, and how should I diagnose the issue?

When diagnosing a gas smell in your 2019 Nissan Versa, it's essential to adopt a systematic approach that prioritizes simpler checks before delving into more complex issues. Start by inspecting the fuel system for any visible leaks, focusing on the fuel lines, tank, and injectors, as these are common culprits. Next, ensure that the fuel cap is securely fastened, as a loose or damaged cap can easily lead to gas odors. If these initial checks do not resolve the issue, turn your attention to the Evaporative Emission Control System (EVAP), which plays a crucial role in containing fuel vapors; look for any signs of malfunction in components like the charcoal canister or purge valve. Additionally, examine the exhaust system for leaks, particularly around the exhaust manifold and catalytic converter, as these can also contribute to a gas smell. Finally, if the problem persists, consider having the engine inspected for issues such as faulty fuel injectors or a malfunctioning fuel pressure regulator. By following this diagnostic approach, you can effectively identify and address the source of the gas smell in your vehicle.

What could be causing my 2019 Nissan Versa to smell like gas?

If your 2019 Nissan Versa is giving off a gas smell, it's essential to pinpoint the cause to ensure your safety and the vehicle's integrity. Common issues include leaking fuel injectors, which can emit fuel vapors into the cabin, and damaged fuel lines that may develop cracks over time, resulting in leaks. A loose or damaged gas cap can also allow fuel vapors to escape, contributing to the odor. Additionally, problems with the evaporative emissions system, which is responsible for managing fuel vapors, can lead to noticeable gas smells. A leak in the fuel tank itself is another serious concern that requires immediate attention. To effectively address these potential issues, conducting a thorough inspection or consulting a professional mechanic is highly recommended, as ignoring these symptoms can lead to safety hazards and more expensive repairs down the line.

How urgent is it to address the gas smell in my 2019 Nissan Versa?

Addressing a gas smell in your 2019 Nissan Versa is not just a matter of inconvenience; it is a pressing safety concern that requires immediate attention. Gas leaks can lead to catastrophic outcomes, including the risk of fire or explosion, particularly in confined spaces where flammable vapors can accumulate. Moreover, the health implications of inhaling gas fumes are significant, with symptoms ranging from mild discomfort to severe health issues with prolonged exposure. Ignoring this warning sign can also result in further damage to your vehicle, leading to more extensive and costly repairs down the line. Therefore, if you detect a gas smell, it is imperative to act swiftly—either by conducting a thorough inspection yourself or seeking professional assistance—to safeguard your health and the integrity of your vehicle.

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2019 Nissan Versa Smells Like Gas: Causes & Solutions