Subaru Impreza WRX STI Problem Report

Subaru Impreza WRX STI Check Engine Light Due to Failed Knock Sensor

(9 reports)

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.

low voltage knock sensor. crazy sporadic readings pulling timing and lowering DAM replaced -
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