diagnostic help po141
maccobra1999
07-10-2005, 09:34 AM
hey, my other daughter's explorer is showing code po141 downstream heated 02 sensor heated circuit fault (bank 1). do i start with a sensor or somewhere else?
way2old
07-10-2005, 02:37 PM
Check the wiring first. Since it is a circuit fault. If wiring looks good, then go to the O2 sensor. The manual gives many pages of diagnostics for the O2 codes.
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