Honda Civic Service Manual page 294

6. Substitute a known-good Ay'F sensor (Sensor 1i and
recnecK.
l s D T C P 1 1 5 9 i n d i c a t e d ?
YES-Update the ECM if it does not have the latest
software, or substitute a known-good ECM, then
recheck (see page 11-6). if the symptom/indication
goes away with a known-good ECN4, replace the
o r i g i n a l E C M . I
N O R e p l a c e t h e A y ' F s e n s o r ( S e n s o r 1 ) . 1
11-87