I\'ve got a 2000 Legacy GT, I\'ve noticed the check engine light come on sometimes while driving, it doesn\'t stay on for long though.
Finally got around to checking the error codes and I\'ve got a 12 and 22.
Apparently a 12 is "Abnormal signal emitted from starter switch". Not so concerned about that, could be my dodgy immobiliser.
I\'m a little more worried about 22, "Abnormal voltage produced in knock sensor monitor circuit".
I\'ve got a service manual and it says the knock sensor is on the top of the engine block under the intake manifold on the passenger side. I can\'t seem to find it...
Anyone got any ideas what to do next?