R26 Check emissions - R26

Hi guys, I’m hoping you can help me with this one before I go on the inevitable wild goose chase of replacing sensors.

The Orange spanner and ‘check emissions’ message came on my R26 a while back and my cheap code reader showed the following.

P0352 - ‘Knock sensor 1 circuit bank 1 or single sensor’

P0136 - ‘O2 sensor circuit bank 1 sensor 2’

I checked everything over and found nothing obvious and it still drove fine. I thought maybe just a stray O2 reading so I erased the code.

As you can probably guess....... it came back on.

I’ve erased the code twice now and it comes back on after about 3 weeks.

Still drives spot on.

I’ve searched the forums and most posts relate to decats but my car is bog standard.

My first port of call is the downstream lambda sensor but thought I’d open it up to you guys first.

Any help would be appreciated.

Thanks.

 

Yes, it sits a needle width to the left of the 3rd mark.

(By 3rd mark I mean the one to the left of tdc)

Thanks.

 

Interesting, do you think maybe it’s not getting up to full temp?

 

I’ve not got access to clip unfortunately.
I presume indies have access to clip though?

I would expect to have other symptoms really but it seems fine.

Should I have noticed any other symptoms with the coolant temp sensor failed/failing . I would expect hesitation or starting issues maybe? All appears fine.

Or do you think the O2 sensor picking up the early signs?

Thanks again.

 

No, the revs drop to what seems perfectly normal.

The funny thing is, I didn’t erase the light this time and it’s now gone off! I assume the code will be stored and the light will return soon?

Anyway, here’s the clocks when up to temp.



Thanks.