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
When you detect a gas smell in your 2012 Dodge Challenger, it's crucial to approach the situation methodically to ensure safety and effective troubleshooting. Start by checking for fuel leaks, as these can often be the primary source of the odor. Carefully inspect the fuel lines, fuel tank, and injectors for any signs of damage or leakage. Next, examine the fuel cap; a loose or damaged cap can allow fuel vapors to escape, leading to noticeable gas smells. If these initial checks do not resolve the issue, turn your attention to the Evaporative Emission Control System (EVAP), which is designed to contain fuel vapors. Look for any faults in components like the charcoal canister or purge valve. Additionally, consider the condition of the fuel filter; a clogged filter can disrupt fuel flow and contribute to odors. Lastly, inspect the exhaust system for leaks or damage, as these can also produce a gas smell. By following these diagnostic steps, you can systematically identify and address the source of the gas odor, ensuring your vehicle remains safe and functional.
When you detect a gas smell in your 2012 Dodge Challenger, it’s crucial to identify the underlying cause to ensure both safety and vehicle performance. One of the most common culprits is fuel leaks, which can occur anywhere in the fuel system, including the fuel tank, lines, or injectors. Inspecting these areas for signs of leakage can help you pinpoint the issue. Additionally, a faulty fuel injector may leak fuel into the engine compartment, contributing to the odor. Another potential source is the evaporative emissions system, which manages fuel vapor release; any malfunction here can lead to noticeable gas smells. Don’t overlook the gas cap, as a loose or damaged cap can allow vapors to escape, creating a persistent odor. Lastly, issues with the exhaust system, such as leaks or damage, can also result in a gas smell inside the vehicle. Addressing these problems promptly is essential, and while some issues may be manageable for a DIY enthusiast, others may require professional inspection to ensure safety and proper resolution.
Addressing a gas smell in your 2012 Dodge Challenger is not just a matter of comfort; it is a critical safety concern that demands immediate attention. Ignoring this issue can lead to severe consequences, including the risk of fire or explosion due to gasoline leaks. Additionally, the inhalation of gasoline fumes poses significant health risks, potentially causing dizziness, headaches, and nausea. A persistent gas odor often indicates a leak in the fuel system, which, if left unaddressed, can lead to further damage and costly repairs. Therefore, it is essential to act swiftly when you detect a gas smell in your vehicle, ensuring both your safety and the longevity of your Challenger.

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.
See what others are asking about their Dodge Challenger. Get answers from RepairPal's community of auto experts and enthusiasts.
Read about related problems experienced by other Dodge Challenger drivers like you.