Rotten Egg Smell During Acceleration
A rotten egg (sulfur) smell when accelerating in a 2020 Nissan Rogue typically indicates a failing catalytic converter or a rich fuel mixture causing excess sulfur in the exhaust.
Diagnosis Details
Possible Causes
Catalytic converter failure or clogging, causing incomplete conversion of sulfur in fuel to hydrogen sulfide.
Rich fuel mixture (e.g., faulty oxygen sensor, fuel injector leak, or mass airflow sensor issue) leading to unburned fuel and sulfur compounds.
Battery overcharging or leaking (sulfuric acid smell) – less common but possible if smell is from engine bay.
Related OBD-II Codes
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What You Should Do
Check for diagnostic trouble codes (DTCs) using an OBD-II scanner.
Inspect catalytic converter for damage or clogging.
Test oxygen sensor and fuel trim readings.
If battery smell is suspected, check battery for leaks or overcharging.
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.
