Rattle/CEL Due to Cracked Welds on Catalytic Converter Heat Shield on Nissan Altima

Submitted by Vehicle Owner · May 29, 2025
Published by RepairPal

Problem overview

Welds on the catalytic converter heat shield can corrode causing a rattle during acceleration and possibly causing Check Engine Light illumination. The common repair for this issue is replacement of the damaged catalytic converter.

85 people reported this problem
31 comments
Schedule Repair

Search for another problem

RepairPal Car Genius

Ask our experts about your Nissan.

RepairPal Car Genius™ is a free resource for vehicle owners seeking advice on maintenance, auto repair, shop inquiries, estimates, and finding a trustworthy repair shop in your area.

 Auto Repair Expert Auto Repair Expert

Call us at 877-913-1554

Available 9am – 6pm ET Monday through Friday

Call Our Experts