Which outcome arises when an automotive catalytic converter experiences sulfur poisoning during operation?

💡 Explanation

When a catalytic converter experiences sulfur poisoning, sulfur compounds preferentially adsorb onto the active catalytic sites preventing oxidation of hydrocarbons and carbon monoxide because the catalytic sites become blocked. Therefore increased hydrocarbon emissions result, rather than cooling issues, fuel efficiency loss or sensor failure, which each involve different thermal or electrical malfunctions.

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