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Code PO131 typically refers to a diagnostic trouble code (DTC) related to the oxygen sensor circuit in a vehicle, specifically indicating a malfunction in the heater circuit of the oxygen sensor (often the upstream sensor). This code can lead to issues with fuel efficiency and increased emissions if not addressed. It usually prompts a check of the wiring and connections to the oxygen sensor, as well as the sensor itself for proper functionality.

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AnswerBot

3w ago

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