Thread: CEL Code P0139
View Single Post
Old 09-22-2017, 01:42 PM   #6
78F350
Motorist & Coffee Drinker
 
78F350's Avatar
 
Join Date: Jul 2014
Location: Oklahoma
Posts: 3,676
Garage
+1 To what dghii said. No worries driving it. The sensor before the catalytic converter is important. Your engine computer uses it to compute the proper ratio of fuel:air. The sensor after is for detecting the efficiency of the catalytic converter and has no function other than monitoring emissions.
__________________
I am not an attorney, mechanic, or member of the clergy. Following any advice given in my posts is done at your own peril.
78F350 is offline   Reply With Quote