Acura TSX VSA and emission light issue related to timing chain replacement needed again at 97,000 miles on Acura TSX

Submitted by Vehicle Owner · Aug 26, 2025
Published by RepairPal

Problem overview

Some Acura TSX owners report experiencing VSA (Vehicle Stability Assist) and emission light issues after a timing chain replacement at 97,000 miles. These owners note that while the VSA light activation is not a major concern on its own, the emission system warning may indicate serious problems, such as a significant engine misfire that can lead to unburned fuel entering the exhaust system and potentially damaging the catalytic converter. It is crucial for these owners to address any underlying issues causing the check engine light to ensure that both the VSA and emission system warnings are resolved. Common causes for the check emission system message include problems with the fuel filter or injectors, a leaking gas cap, or a clogged catalytic converter. If the VSA and emission lights continue to persist after addressing the check engine light, further diagnostics may be necessary to identify the specific cause of these warnings.

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Acura TSX vehicles with this problem

1 model year affected

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