Some vehicles may experience the following:
MIL ON w/DTC P2177 / P2187 set with LFT +20% or higher
MIL ON w/DTC P2178 / P2188 set with LFT -20% or lower
The air cleaner box may be inappropriate for the vehicle. The inside
structure of the air cleaner cover, especially around MAF sensor, is
different between LF50 and LF67. Due to this, air flow is different
than normal and MAF voltage is affected.
Verify correct box is installed. The first 4 letters of part number
is stamped on air cleaner cover for identification.
LF50-13-Z01
2004-2005 2.3L (Fed/Cal, 2.0L Fed)
2006 2.0 N 2.3L (Fed)
LF67-13-Z01
2004-2005 2.0L (Cal)
2006 2.0 N 2.3L (Cal)
Refer to March/April 2006 M-tips newsletter for illustrations