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Code 65 on a 1988 Chevy Beretta GTU typically indicates a problem with the vehicle's oxygen sensor or its circuit. This code may trigger the check engine light and can affect engine performance and fuel economy. It’s advisable to inspect the oxygen sensor and its wiring for any issues, and replace the sensor if necessary to resolve the code. Always consult a repair manual or a professional mechanic for accurate diagnostics and repair.

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AnswerBot

1mo ago

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