Focus Fanatics - View Single Post - P0041 and P0123
Thread: P0041 and P0123
View Single Post
Old 12-09-2012, 08:39 PM   #7
BC_ZX3
DTC P0606
 
BC_ZX3's Avatar
 
Join Date: Jul 2007
Fan#: 48751
Location: Vancouver, BC, Canada
What I Drive: 2001 Red ZX3 Turbo

Posts: 2,834
FF Reputation: 86 BC_ZX3 Excellent Standing Member
Buy-Sell-Trade Rating: (3)
An internal short in the O2 sensor is possible although not probable.
Simply disconnect the rear O2 sensor harness connector, wire it up out of the way, clear your DTC codes and see what codes (other than P0420) appear. If your P0041 fails to reappear, the O2 sensor needs replacement. If P0041 reappears, the O2 sensor is not the problem source.
Are you in a hatchback or a sedan?
BC_ZX3 is offline  
    Reply With Quote