Upstream O2 Code (DF057)

[SharpyClio]

While looking at the misfire codes I’ve noticed an upstream o2 code. It’s not showing an EML but I wonder if it’s been coded out as it’s decat?

So my query is, given its throwing a code, should I replace it? Or is it part of the decat situation?

thoughts?

 

[JamesBryan]

Upstream is before the cat so it won't have been coded out, it needs that sensor for closed loop fuel corrections.

 

[SharpyClio]

Upstream is before the cat so it won't have been coded out, it needs that sensor for closed loop fuel corrections.

Thanks. So I should probably look into it a bit more and possibly replace it then.

 

[JamesBryan]

Thanks. So I should probably look into it a bit more and possibly replace it then.

Yeah definitely.

These cars do like to eat through lambda sensors for some reason.

Should be able to get a Bosch one for around £60 last time I looked.

 

[JamesBryan]

BOSCH Lambda Sensor 0258006046 (LS 6046, LSF-4.2, 0 258 986 615)

The UK's largest independent supplier of automotive oils, fluid and parts. We've products to suit any vehicle, from full blown Race / Track weapons, to Daily Drivers looking to save money. Plus FREE expert advice & recommendations - OPIE KNOW OILS

www.opieoils.co.uk

This is the part number.

 

[SharpyClio]

BOSCH Lambda Sensor 0258006046 (LS 6046, LSF-4.2, 0 258 986 615)

The UK's largest independent supplier of automotive oils, fluid and parts. We've products to suit any vehicle, from full blown Race / Track weapons, to Daily Drivers looking to save money. Plus FREE expert advice & recommendations - OPIE KNOW OILS

www.opieoils.co.uk

This is the part number.

Much obliged. Just ordered one, I’ll Chuck it on and see if it helps. If not I’ll do some more digging.

 

[JamesBryan]

Much obliged. Just ordered one, I’ll Chuck it on and see if it helps. If not I’ll do some more digging.

Always handy to have a spare anyway 😅

 

[SharpyClio]

State of my shed and that’s not even all the big stuff 🤣 spares seems to be a must.

 

[Krarl]

State of my shed and that’s not even all the big stuff 🤣 spares seems to be a must. View attachment 1625305

I remember my first broken Clio🫣🤣