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To replace a PO13502 sensor heater, first, disconnect the negative battery terminal to ensure safety. Locate the oxygen sensor associated with the code, typically found on the exhaust system. Unscrew the old sensor using an oxygen sensor socket, then install the new sensor by threading it in and tightening it securely. Finally, reconnect the battery, clear any diagnostic trouble codes, and test the vehicle to ensure the issue is resolved.

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3mo ago

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