P0135 code?

**murray01** · 03-08-2006, 07:40 AM

It comes up as P0135 02s heater circuit, bank 1 sensor 1 Malfunction. Is this just the o2 going bad or something else? If it is the 02 are the front and back 02's the same?
Thanks in advanced

**SeVeReDiStOrTiOn** · 03-08-2006, 10:38 AM

Yes the front and back o2's are the same part number....swap the driverside front o2 with the rear, clear the DTC and see if the new dtc pops up as po420. If it's still p0135 then either you might have bad luck and swap another o2 to the driverside or there's something else wrong. Either way it might take a few drive cycles for any new DTC's to pop up so be patient

**murray01** · 03-08-2006, 11:01 AM

What does the P0420 mean if it pop's up after i swap them? I have the rear 02's deleted but still have the o2's so i will swap them out and see what happens. thanks for your help.

**Roastem** · 03-08-2006, 11:48 AM

I had the exact same code two weeks ago. It said both O2 heater circuits had went out. I had the guy at Advance remove the code, and price two new sensors. They were like 180 or something for both!

The code never came back after that though.

Have the code removed, if it comes back, then replace one sensor at a time.

Bank 2 sensors are the rear ones, and Bank 1 are the front ones. I think. My computer was tuned to ignore the bank 2 stuff, since there are no cats anyway.

I think bank 1 sensor 1 is your driver's side front sensor, and bank 1 sensor 2 is your passenger side front sensor.

**BIG D's SS** · 03-08-2006, 11:50 AM

I think bank 1 sensor 1 is your driver's side front sensor, and bank 1 sensor 2 is your passenger side front sensor.

I'm pretty sure your right on that. 1 is drivers and 2 is passengers.

**murray01** · 03-08-2006, 12:50 PM

I have a perdator and cleared them awhile back it took them awhile but the ses light came back on. I think i am going to just try using my back 02 and see if that works.