Car Problem Reports

Subaru Impreza Outback Check Engine Light Due to Failed Knock Sensor

Subaru Impreza Outback Problem
7 Reports
Me Too

Model Years Affected: 2000, 2001, 2002, 2003, 2004

Engine Affected: 2.5L 4 Cylinder


The Check Engine Light may illuminate because of a failed knock sensor. Although the sensor often tests okay, it can fail intermittently, while the vehicle is being driven.