Just got my smog done and the only error was:
P0324 Knock Sensor 1 Circuit Malfunction.

The car runs fine, but I wonder is a sensor is really bad.


Sorry if this is a repost, but without search available, I can't check.

 

check the harness, the car will seem like it runs fine, but the gas mileage will decrease and itll lag with estimate HP loss of about 15-20 HP, sometimes the harness is just corroded, check the how-to's on how to fix this