Report: Replace Oxygen Sensor When Servicing EGR System
Toyota Corolla Problem
Model Years Affected: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997
Over the time the exhaust gas recirculation (EGR) system may become plugged with debris, the oxygen sensor may also be getting slow or 'lazy' around this time. When servicing or cleaning the EGR system, it is a good idea to replace the oxygen sensor because it works in tandem with the EGR system.
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