p0135 computer code


4Banger

15+ Year Member

Joined
Aug 13, 2007
Messages
21
Points
3,101
Age
44
City
Northern NH
Vehicle Year
2003
Transmission
Automatic
Hey it has been a while since i have posted but between the new house new job and soon to be new baby things have been a bit crazy. I have a 98 ranger with a 4.0 auto trans that is having problems with a check engine light. I put a scanner on it and it is pulling a code p0135 o2 heat sensore malfuntion on bank 1. I was thinking that this is cause by a faulure in the o2 sensor on either side of the exhaust manifold. Am I off on this and if not which side is it? Anything I should be looking for to fix this? Thanks in advance for the help on this.
 
Passenger side is bank 1, and the code refers to sensor 1 or "upstream". You'll need a new upstream O2 sensor. It will be located in the downpipe just below the manifold.
 
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