Can anyone explain how to test my HO2 sensors using SDD? They seem to both have failed according to data I can see in Torque app. Just been through old invoices and the previous owner fitted eBay ones that cost 23 quid each. Not good :/

 

Man theres so much say on this. But im typing with my thumb so I am nit gonna type it. You want to look at their output voltage or output current AFTER IT WARMS UP. If you look at it when its cold or warming up youll see a bunch of weird stuff so just wait until its warm and steady. Use the live monitoring function that will show up as an option if you claim engine a bunch of performance related symptoms in the service menu. Thats thd only way i know how to see the live monitoring program in the options. The voltages and current should bounce up and down at really low numbers like 1 or less. If you have a leak it will be biased to one side or switching very little. Theres some great reference manuals on the jagrepair site

 

Here's my car at 2500RPM.

Nothing moves at all. Bizarre.

 

I never looked at mine at anything other than idle so I can’t tell you what they should look like but I would imagine they shouldn’t look like that.

 

Heres mine at idle

 

Cheers. Mine are definitely screwed then. Ordered all 4 genuine Denso units so hopefully they solve the issue.

Wonder why I wasn't getting any codes for failed sensors though. Very strange.

 

Did you go into 'Unrelated Events' to look at the codes there? If you did not put in the symptoms relating to those failures it will not show up in 'Related Events'.
You definitely have problems with the upstream O2's. They show current draw in the Amps range when there should only be MA. Looks like the connectors are wrong and it is trying to adjust the heaters!

 

Yeah it peaks at 9.1A which is just crazy.

It's not the heaters though - they're wired up correctly.

 

Hi XJR hunter.


Did you finally solve the issue?

It seems that my car shows same thing, all of the sensors are not showing anything in SDD as yours

 

Hi everyone.

I have a Jaguar xf x250 2.2 diesel and have SDD v164 installed in offline mode.

Please tell me how to view the fuel trim values via sdd?

I cannot find it in Datalogger. I can't figure out how to do this.

Thanks everyone for the help.