Buick Encore: Cabin Air Filter

 Check engine light

NOTE: To determine the appropriate reset procedure, refer to CHECK ENGINE LIGHT RESET INDEX. Only vehicles listed in this index have a check engine light reset. CHECK ENGINE LIGHT RESET INDEX CHECK ENGINE LIGHT RESET - PROCEDURE 1 Federal Emissions CHECK ENGINE light functions as a service remi

 Heated oxygen and oxygen sensor caution

CAUTION: Do not remove the pigtail from either the heated oxygen sensor (HO2S) or the oxygen sensor (O2S). Removing the pigtail or the connector will affect sensor operation. Handle the oxygen sensor carefully. Do not drop the HO2S. Keep the inline electrical connector and the louvered end free of