Computer problem
1994 Subaru Legacy 4 cyl Front Wheel Drive Automatic 127000 miles
----------------------------------------------------------------
My wife's 1994 Subaru Legacy L has had the check engine light on for a long time. I've replaced each sensor in the flashing-code readout to repair. However, it still flashed the code for the anti-knock sensor and that one has been replaced also. I've left the battery disconnected for 48 hrs to clear the computer but this sensor code keeps coming back. What else can I try?

Hi Scoprion8,

If the knock sensor code keeps coming back, you need to check the ignition and valve timing.

The fuel octane is onother area to keep your eyes on.