2011 Honda Fit Smells Like Gas

Common Causes of Gas Smells in Your 2011 Honda Fit and Essential Safety Measures to Take

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
15% chance it's the
Gas Cap
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40% chance it's the
Emissions Control System
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45% chance it's
Something else
The most common reasons a 2011 Honda Fit 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 2011 Honda Fit 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.

When the fuel filter begins to clog, the engine suffers from fuel starvation. This will cause a significant reduction in power and may also cause a misfire. These conditions may be intermittent, or constant and worsen over time. As the issue progresses, the engine may being to stall immediately after starting, fail to start, hesitate under throttle, or stall at particular angles on hills.

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 steps should I take to diagnose the gas smell in my 2011 Honda Fit?

To effectively diagnose the gas smell in your 2011 Honda Fit, start by locating the source of the odor. Begin with a careful inspection of the engine bay, as this area is often where fuel leaks can occur, particularly from fuel lines or injectors. Look for any visible signs of fuel, such as wet spots or stains, which could indicate a leak. Next, check the undercarriage of the vehicle, as leaks can sometimes drip down and accumulate there, posing a fire hazard. Pay special attention to the fuel tank and filler tube, as a strong smell in this area may suggest a problem with the fuel system. Additionally, monitor your dashboard for the check engine light; if it illuminates, it may be accompanied by trouble codes that can provide further insight into the issue, particularly those related to the EVAP system. By following this diagnostic approach, you can systematically identify and address the source of the gas smell, ensuring both your safety and the proper functioning of your vehicle.

What are the common causes of a gas smell in a 2011 Honda Fit?

When you detect a gas smell in your 2011 Honda Fit, it's essential to investigate several common problems that could be the source of the odor. One of the first areas to check is the gas cap; a loose or damaged cap can easily allow gas vapors to escape, creating a noticeable smell inside the vehicle. Additionally, issues within the fuel system, such as leaks or malfunctions, can lead to gas fumes permeating the cabin, so inspecting fuel lines and connections is crucial. The emissions control system is another potential culprit; a failing catalytic converter or other components can contribute to the gas smell. It's also worth considering that lingering fumes from a recent fill-up may temporarily affect the cabin air quality. Lastly, examining the seal between the gas cap and the gas tank can help identify any fuel leaks that might be present. By systematically checking these areas, you can effectively diagnose and address the gas smell in your Honda Fit, ensuring a safer and more pleasant driving experience.

How urgent is it to address the gas smell in my 2011 Honda Fit?

Addressing a gas smell in your 2011 Honda Fit is not just a matter of convenience; it is a critical safety concern that requires immediate attention. A gas odor can signal a fuel leak, which poses a significant fire hazard and can lead to catastrophic consequences if left unchecked. Ignoring this warning can escalate into more severe mechanical issues, potentially compromising the vehicle's performance and safety while driving. For DIY enthusiasts, it is essential to recognize that timely intervention can prevent costly repairs and ensure the vehicle operates safely. Therefore, if you detect a gas smell, it is imperative to investigate the source promptly, whether that means checking for visible leaks, inspecting fuel lines, or consulting a professional mechanic for a thorough diagnosis. Prioritizing this issue not only protects your investment but also safeguards your well-being and that of others on the road.

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