Check Engine Light Due to PCV Grommet Vacuum Leaks on Lincoln Aviator

Submitted by Vehicle Owner · Apr 1, 2025

Published by RepairPal

Problem overview

A vacuum leak from the PCV grommet vacuum leak can cause the Check Engine Light to illuminate. The molded rubber hose connections may crack and collapse, causing the vehicle to run roughly. A damaged PCV hose will require replacement.

44 people reported this problem

22 comments

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Lincoln Aviator vehicles with this problem

3 model years affected

Average mileage: 104,036 miles

(23,000 - 193,000)

Repairs related to this problem

PCV Valve Replacement

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Check Engine Light Due to PCV Grommet Vacuum Leaks on Lincoln Aviator

Problem overview

Lincoln Aviator vehicles with this problem

Need a diagnosis? Trust our Lincoln experts.

Search for another problem

Ask our experts about your Lincoln.

Need a diagnosis? Trust our Lincoln experts.

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