2011 Honda Pilot Smells Like Gas

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

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Reviewed by
Aisha
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
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45% chance it's
Something else
The most common reasons a 2011 Honda Pilot 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 Pilot 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 are the potential causes and diagnostic steps for a gas smell in a 2011 Honda Pilot?

When dealing with a gas smell in your 2011 Honda Pilot, it's essential to adopt a systematic diagnostic approach to identify the root cause effectively. Start by inspecting the fuel system for visible leaks, focusing on components like fuel lines, injectors, and the fuel tank. A common and simple issue could be a faulty fuel cap; ensure it is securely tightened and free from damage, as a loose cap can allow gas vapors to escape. Next, utilize an OBD-II scanner to check for any error codes that may indicate problems within the fuel system or emissions components. Pay particular attention to the evaporative emissions system, inspecting the charcoal canister and purge valve for any signs of wear or leaks. Additionally, examine the exhaust system for any holes or damage that could contribute to the gas smell. Finally, monitor your fuel consumption for any sudden changes, as this can provide further clues about potential fuel system issues. By following this structured approach, you can efficiently diagnose and address the source of the gas odor in your vehicle.

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

When you detect a gas smell in your 2011 Honda Pilot, it's essential to investigate several common issues that could be at play. One of the primary culprits is a fuel leak, which may stem from a damaged fuel line or a malfunctioning fuel injector, both of which can lead to fuel escaping into the engine compartment or under the vehicle. Additionally, a faulty or loose fuel cap can allow fuel vapors to escape, creating a noticeable odor inside the cabin. Another area to consider is the evaporative emissions control system, which is responsible for capturing and recirculating fuel vapors; any malfunction here can result in a gas smell. Furthermore, a clogged or failing fuel filter can disrupt the fuel system's efficiency, potentially leading to odors. Lastly, don't overlook the exhaust system, as leaks or issues with components like the catalytic converter can also contribute to a gas smell. By systematically checking these areas, you can identify and resolve the source of the gas odor, ensuring a safer and more pleasant driving experience.

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

Addressing the gas smell in your 2011 Honda Pilot is an urgent matter that should not be overlooked. A gas odor can indicate a fuel leak, which poses significant safety risks, including the potential for fire or explosion. Ignoring this warning could lead to more severe issues within your vehicle's fuel system, ultimately affecting its performance and efficiency. It is crucial to act promptly when you detect unusual smells in your car, as they can signal underlying problems that may escalate if left unaddressed. To ensure your safety and the proper functioning of your vehicle, it is highly advisable to have the issue inspected by a qualified mechanic without delay. Taking swift action not only mitigates risks but also helps prevent further complications that could lead to costly repairs down the line.

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