Nissan Murano multiple warning lights and engine smoking, suspected melted catalytic converters on Nissan Murano

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Nissan Murano owners report experiencing multiple warning lights and engine smoking, with concerns about potentially melted catalytic converters. These symptoms can indicate serious issues, as ignoring engine warning lights may lead to small problems escalating into costly repairs. Owners have noted that smoke can arise without engine overheating, possibly due to oil spillage, which requires immediate attention to prevent further complications. Additionally, problems with the catalytic converter can significantly impair engine performance and affect vehicle emissions. It is advised that owners seek prompt inspection and professional assessment to diagnose the underlying issues, as repairs may be necessary to address melted catalytic converters and ensure optimal vehicle safety and performance. Regular maintenance and timely responses to warning lights are recommended to prevent such issues in the future.

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