Can refers to computer aided network problem, meaning different signals are sent throught eh same wire to the ecm. This may be an ecm/tcm problem but I'm sending check in pic to see if it's a short in wiring if it is you'll have to follow it down. This is for the 1642 code. The misfire may be setting your knock sensor off so fix that first and no you can't disconnect sensor to temporarily fix it.
Image (Click to make bigger)
SPONSORED LINKS
Thursday, November 20th, 2014 AT 4:22 PM