Nissan Altima transmission fluid leaking from case and output shaft seal with rough idle and engine light on on Nissan Altima

Submitted by jpd647 · Jun 23, 2025
Published by RepairPal

Problem overview

Some Nissan Altima owners report experiencing transmission issues, including symptoms such as transmission fluid leaking from the case and output shaft seal, rough idle, and the engine light being on. These leaks may indicate a damaged seal or gasket within the transmission system, which requires prompt attention to avoid further damage. Additionally, some owners find that a rough idle can stem from transmission problems, such as improper shifting or internal issues, necessitating a thorough diagnosis to determine the cause. The engine light being illuminated may also signal transmission-related problems affecting overall vehicle performance, and it is advisable to scan the onboard diagnostic system to pinpoint the specific issue. Given the seriousness of these transmission concerns, consulting a qualified mechanic or a Nissan dealership for timely diagnosis and resolution is recommended to ensure the vehicle's safety and reliability.

17 people reported this problem
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Nissan Altima vehicles with this problem

Average mileage: 145,125 miles
(79,000 - 220,000)

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