Chevrolet Impala intermittent low oil pressure warning light issue despite adequate oil levels and multiple sensor replacements on Chevrolet Impala

Submitted by heidi31 · Aug 29, 2025
Published by RepairPal

Problem overview

Some Chevrolet Impala owners report experiencing intermittent low oil pressure warning lights despite having adequate oil levels and replacing multiple sensors. These issues may stem from a defective oil pressure sensor that continues to provide inaccurate readings, even after replacement. Additionally, clogged oil filters can restrict oil flow, leading to fluctuations in oil pressure that trigger the warning light. Some owners also face problems with a failing oil pump, which may not circulate oil effectively, causing intermittent drops in oil pressure. Internal oil leaks can further complicate matters by preventing oil from reaching critical engine components, resulting in pressure fluctuations. Moreover, electrical issues such as faulty wiring or connections related to the oil pressure sensor can contribute to these intermittent warnings. To resolve these concerns, it is advisable for owners to seek a thorough diagnostic check from a qualified mechanic to identify the root cause of the problem.

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