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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.
Common Problems > Subaru Impreza Outback
Q&A > Subaru > 1999 Subaru Impreza Outback
Q&A > Subaru > 1997 Subaru Impreza Outback