02 sensor error

[waztted]

I had a 02 sensor bank 1 sensor 2 low voltage error .

I have replaced the driver side post cat sensor with new genuiene error and cleared codes,
check engine light went off.

driving for 10 mins light comes back on and error is back .
anyone dealt with this before?

the passenger side post 02 sensor plugs straight into the original harness , the drivers side post sensor is running through a small extension harness
car is running a maf with a tune .

 

[greenacc]

Is this extension harness some kind of aftermarket job? Might be a dodgy cable or bad connection somewhere.

 

[waztted]

it all looked tidy, can anyone confirm what side bank 1 is ?? i assumed drivers side??
now ive heard a couple people say its passenger side

 

[greenacc]

Easiest way to check is swap the one you took off with the old one on the other side and see what happens.
From memory bank 1 is passenger side yes. Probably whichever side cylinder 1 is on.

 

[Not_An_Abba_Fan]

Does it have extractors? Usually the reason for an extension. Bank 1 is passenger side.

 

[kwaka738]

it all looked tidy, can anyone confirm what side bank 1 is ?? i assumed drivers side??
now ive heard a couple people say its passenger side

Bank 1 is definitely the driver's side. And you can also see that from VS_Pete's diagram in his post.

 

[waztted]

according to the service manual on a l98 bank 1 is on the passenger side is a RHD car

 

[waztted]

 

[VS_Pete]

Easiest way to check is swap the one you took off with the old one on the other side and see what happens

Well try what greenacc posted.

 

[blackve76]

I always change 2 sensors (one each side) did the change one only then engine light came on few weeks later think computer likes 2 fresh ones to read the same