Ford Mustang 2020

Persistent Fuel Smell in 2020 Ford Mustang

A constant gasoline odor in a 2020 Ford Mustang indicates a fuel system leak or vapor issue. This poses a fire hazard and should be addressed immediately.

Serious — Inspect Soon

Diagnosis Details

Possible Causes

Most Likely

Loose or missing gas cap

Possible

Fuel injector leak or O-ring failure

Less Common

Cracked fuel line or fuel tank leak

Related OBD-II Codes

P0455Evaporative Emission System Leak Detected (Large Leak)P0456Evaporative Emission System Leak Detected (Very Small Leak)P0442Evaporative Emission System Leak Detected (Small Leak)

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What To Do Next

What You Should Do

Check and tighten the gas cap first.

If smell persists, inspect fuel injectors, fuel lines, and the fuel tank for leaks.

Do not drive the vehicle until the source is found and repaired.

Related Repairs

fuel injector

Estimated Repair Cost

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Disclaimer: This AI-generated diagnosis is for informational reference only. Always consult a qualified mechanic for an in-person inspection. AutOwner is not responsible for decisions made based on this information.