Check Engine Light due to catalytic converter faults on Volkswagen Passat

Problem overview

Check Engine Light illumination can be related to catalytic converter faults, which will require a re-flash of the ECM or replacement of the catalytic converter.

2 people reported this problem

0 comments

Schedule Repair

Volkswagen Passat vehicles with this problem

1 model year affected

2004 Volkswagen Passat

Repairs related to this problem

Catalytic Converter Replacement

Need a diagnosis? Trust our Volkswagen experts.

RepairPal Certified shops offer expert diagnosis and repair services for your Volkswagen Passat, ensuring transparency with upfront pricing and a minimum warranty of 12 months or 12,000 miles on all repairs and services.

Search for another problem

RepairPal ™Car Genius

Ask our experts about your Volkswagen.

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.

Submitted by Vehicle Owner · May 29, 2025

Published by RepairPal

Call us at 877-913-1554

Available 9am – 6pm ET Monday through Friday