check engine on.code p1166 present on 2002 Acura RSX

i have a 2002 rsx,check engine light is on.code p1166 present.i can clear code with scan tool nd as soon as vehicle is started the code sets

by in Fayetteville, GA on January 25, 2010
1 answer
ANSWER by on January 25, 2010
P1166 is a AF sensor heater circuit is bad. Bank 1 Sensor 1 Follow these test procedures http://www.acuraworld.com/forums/f27/trouble-code-p1166-85027/