Lincoln MKX check engine light on, dealer claims catalytic converter replacement is not covered under service contract on Lincoln MKX

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Lincoln MKX owners report experiencing issues with the check engine light being on, particularly when faced with dealer claims that catalytic converter replacement is not covered under their service contract. These owners may be unaware that catalytic converters are typically covered under the federal emissions warranty for up to eight years or 80,000 miles. Furthermore, those with Lincoln Protect Extended Service Plans often find that covered repairs due to defects in material and workmanship usually require only a deductible payment. However, if a specific service contract does not cover the catalytic converter replacement, owners are advised to review the contract's terms and inquire about the reasons for the lack of coverage, as well as explore alternative solutions for addressing the check engine light issue.

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