Rotten Egg Smell During Acceleration
A rotten egg smell (sulfur odor) when accelerating in a 2020 Honda CR-V typically indicates a rich fuel mixture or a failing catalytic converter. The catalytic converter may be overheating due to unburned fuel, causing the sulfur smell. This can also be caused by a faulty oxygen sensor or fuel system issue.
Diagnosis Details
Possible Causes
Failing catalytic converter – internal damage or clogging causing sulfur buildup and release when hot.
Rich fuel mixture – faulty oxygen sensor, fuel injector leak, or mass airflow sensor causing excess fuel.
Fuel contamination – bad gasoline with high sulfur content.
Related OBD-II Codes
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What You Should Do
Have the vehicle inspected by a mechanic.
They should check the catalytic converter temperature, oxygen sensor readings, and fuel trim data.
A diagnostic scan can identify trouble codes.
If the catalytic converter is failing, replacement is often necessary.
Also consider using top-tier fuel to reduce sulfur content.
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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.
