Hwy guys...I'm chasing down a P219B code and looking to replace / substitute the upstream sensor. I already replaced the lower sensor (wonky waveform seen on my 'scope) without success. It was a bear, but got it done. The upper sensor looks even tougher, less room to swing a wrench. Anybody have any hints how to access it, from top or bottom?

2010 XK non-supercharged.

 

Hi Tracee, I had the same problem, I ended up taking my 2010 XK 5.0L to a British EU shop in Sunnyvale California not far from my house. They had it up on the rack for quite a while to get to those. I wanted to do it my self, but couldn’t. I don’t have a lift.

 

I managed to change the post-cat sensor myself (to no avail...), but the pre-cat looks impossible to access. Think Jaguar recommends dropping the exhaust to get access. Pondering for now.

 

Hi Tracee,

I don't know if you have the Workshop manual, but it is available at our member Gus' website, jagrepair.com. According to the manual, there are many possible causes of P219B:



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Cheers,

Don

 

You are correct...