Check Engine Light Due to Improperly Manufactured Threads on Fuel Filler Pipe on Mazda RX-8

Problem overview

Some models may have a problem where the Check Engine light illuminates indicating an improperly tightened fuel cap. Due to improperly manufactured threads on the fuel filler pipe, the filler pipe may need to be replaced.

14 people reported this problem

4 comments

Schedule Repair

Mazda RX-8 vehicles with this problem

6 model years affected

Average mileage: 52,551 miles

(13,500 - 104,000)

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Submitted by Vehicle Owner · May 29, 2025

Published by RepairPal

Check Engine Light Due to Improperly Manufactured Threads on Fuel Filler Pipe on Mazda RX-8

Problem overview

Mazda RX-8 vehicles with this problem

Need a diagnosis? Trust our Mazda experts.

Search for another problem

Ask our experts about your Mazda.