Code P0133 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Mr_Brian · 05-26-2022, 05:42 PM

My car started throwing code P0133 the car has a JDL UEL uncatted header and I think a stage 2+ OFT tune. After doing some research it seems like this is related to the front o2 sensor and could be related to having a o2 sensor spacer. My question is does this o2 sensor have a spacer or is this normal? The thing circled in blue is what I'm not sure about is that a spacer?

waifu_zn6 · 05-26-2022, 06:59 PM

did that spacer come with the header?

Mr_Brian · 05-26-2022, 07:21 PM

Quote:

Originally Posted by waifu_zn6

did that spacer come with the header?

Is it a spacer? I bought the car like this and I'm not sure what it's supposed to look like on a aftermarket header.

waifu_zn6 · 05-26-2022, 08:43 PM

ive done a uel header mod once and ive never seen an o2 sensor like that. it should look like the pic, that flat part should be close to the header piping. that "extension" might be throwing off your cars readings.

blsfrs · 05-27-2022, 12:07 PM

The upstream 02 sensor screws directly into the manifold. Often a spacer is used on downstream 02 sensor to avoid throwing a P0420 (Cat insufficiency code) with hi flow or catless manifolds.

Mr_Brian · 05-27-2022, 05:43 PM

I finally got the o2 sensor off and that was a spacer I removed it cleared the codes and drove about 20 miles so far so good.

05-26-2022, 05:42 PM	#1
Mr_Brian Member Join Date: Mar 2017 Drives: BRZ Location: NJ Posts: 44 Thanks: 21 Thanked 6 Times in 6 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Code P0133 My car started throwing code P0133 the car has a JDL UEL uncatted header and I think a stage 2+ OFT tune. After doing some research it seems like this is related to the front o2 sensor and could be related to having a o2 sensor spacer. My question is does this o2 sensor have a spacer or is this normal? The thing circled in blue is what I'm not sure about is that a spacer? Attached Images

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05-27-2022, 12:07 PM	#5
blsfrs Senior Member Join Date: Dec 2018 Drives: 2013 frs base Location: central Virginia Posts: 1,440 Thanks: 2,684 Thanked 1,442 Times in 685 Posts Mentioned: 13 Post(s) Tagged: 0 Thread(s)	The upstream 02 sensor screws directly into the manifold. Often a spacer is used on downstream 02 sensor to avoid throwing a P0420 (Cat insufficiency code) with hi flow or catless manifolds.

05-27-2022, 05:43 PM	#6
Mr_Brian Member Join Date: Mar 2017 Drives: BRZ Location: NJ Posts: 44 Thanks: 21 Thanked 6 Times in 6 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I finally got the o2 sensor off and that was a spacer I removed it cleared the codes and drove about 20 miles so far so good.

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