Sean01

iTrader: (2)

I recently installed a set of pacesetters on my 04 6.0 2500hd. 500 miles or so after the install I started getting the code p0135. heater cuircut sensor 1 bank 1. I just wanted to know if this is a common problem with longtubes, or if its just a coincidence (spell check?) that it failed. I have cleared it a couple of times and it just comes right back. I have checked the wiring and it is in good condition.

My local gm dealer wants 170 for the sensor and napa wants 140 for a bosch and kragen is only 75 for a bosch 02 sensor. Is there a difference between the oem sensors and the bosch ones? Id hate to spend 170 for a new sensor if that isnt the problem

thanks

00ChevyScott

iTrader: (10)

its very common, i got it on mine. basically ive got the codes disabled via EFIlive. Its not really important IMO

Grumpy5.3

iTrader: (14)

to fix it, you would need to replace the sensor. See that code alot, whether it has headers or manifolds

00ChevyScott

iTrader: (10)

It's not a bad sensor, replacing it will do no good.

trust me.

I used extra O2's I had in the garage to make sure, got the same codes.

Grumpy5.3

iTrader: (14)

Sean01

iTrader: (2)

i ended up picking up a new sensor from gm, the parts guy cut me a break. Ill let you guys know if it fixed it or not.

thanks for the replies.

00Silv4.8

iTrader: (10)

shoulda spliced the connector with one of ur old rear O2's.. But glad u've got it under control. If ur talking about it reading like a bank lean or anything like that (indicating a bad sensor) this will fix it.

Sean01

iTrader: (2)

Im still running the cats so the rear 02's are still in service. But thanks for the suggestion. The code is saying that the heater cuircut is bad.

budhayes3

iTrader: (19)

It's a pretty common failure for many manufacturers, the heater in the O2 sensor goes bad and trips the code. The O2 sensor needs to be at a certain temp to function properly, and the heater gets it there quickly...

stone150

iTrader: (2)

not to hijack, but what are your rear O2's set to in efi live