P0135 Diag Code

[p coico]

2004 GTP has this o2 sensor code. Bank1, sensor1 02 Heater circuit.
Is it time to replace that one ? Or is there any other fix for the heater ?
Better yet which one is that ? Upstream in front of engine ?
Thanks,,,

 

[J57ltr]

That's the front one, could be the heater circuit could be the wiring. look there first.

 

[p coico]

That's the front one, could be the heater circuit could be the wiring. look there first.

OK, so in front manifold ,,,, not near the firewall ?

 

[J57ltr]

No there are only 2 one in front of the cat and one and after 1&2. Check the wiring then ohm out the heater circuit on the O2.

 

[p coico]

No there are only 2 one in front of the cat and one and after 1&2. Check the wiring then ohm out the heater circuit on the O2.

Thanks j57ltr !
If it is just the heater circuit and the O2 sensor is still functioning after it heats up from engine heat, is it even worth changing the O2 sensor ?

 

[J57ltr]

You will need to, to pass emissions. Look into the wiring first too since you could have a break in the line or even a fuse blown.

Jeff

 

[Scottydoggs]

its a dead o2, change it, buy one on line at rockauto, get a delco, buy a o2 socket and take the old one out and pop the new one in.

 

[p coico]

Yeah. Thanks guys. Will order an oem one [ Delco ] from Rock Auto .... Took a look at the wiring today. Nothing abnormal.