Rotten Egg Smell During Acceleration
A rotten egg smell (sulfur odor) when accelerating in a 2020 Toyota Camry typically indicates a failing catalytic converter or an overly rich fuel mixture causing the converter to overheat and emit hydrogen sulfide. This should be addressed promptly to prevent further damage.
Diagnosis Details
Possible Causes
Catalytic converter failure or contamination – internal damage or sulfur buildup from rich fuel mixture.
Rich fuel mixture due to faulty oxygen sensor, fuel injector leak, or mass airflow sensor issue.
Engine misfire or exhaust leak causing unburned fuel to reach the catalytic converter.
Related OBD-II Codes
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What You Should Do
Have the vehicle inspected by a professional mechanic.
They should check the catalytic converter for efficiency, scan for diagnostic trouble codes, and test oxygen sensors, fuel trim, and ignition system.
Avoid prolonged driving until diagnosed to prevent converter damage.
Related Repairs
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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.
