Thank you all for the Welcome (again) and the kind words.


As I had mentioned, I got the dreaded check Engine light and had the codes read. Came back with P1647 and P1111. A little research revealed that I may have an issue with a O2 sensor.


Dug out the air filter box and tracked everything down (thank you Forum). Wiring and connecters looked OK so thought I'd read the resistance. Apparently, someone (brother?) absconded my digital meter leaving only my analog meter. This meter works well for what it is, just not digital. Zeroed it on all scales 10-1K and tested at the connecter to the sensor. Black wires... I think that GOOD was between 3-20 ohms. I got nothing/nada/zilch. No movement in the needle at all. Kept zeroing the meter and testing between scales, no movement.


My question is, what does this mean???


I thank you in advance!!!


Dave

 

nabnassett: You are quite fortunate to have an uncle leave you a car as nice as this! You are also fortunate that this fix is rather straightforward and inexpensive.

The two black wires power a heating element inside the oxygen sensor, like hot wires inside a toaster. As the oxygen sensor ages - after 76K miles in the case of your '04 X-Type - the heating element burns out, similar to a burnt out filament in old light bulb. This is why your multimeter won't register the resistance - the burnt heating element is an open circuit with effectively infinite resistance.

To fix it, replace the upstream O2 sensor on Bank 2 - the radiator side with a Bosch 15627 or Denso 234-9029. Amazon sells the Denso for $61:


A few tips:
+ A dab of anti-seize compound on the threads (not the sensor, just the threads) will make it easier to remove next time.
+ Take care not to lean on, or press against the rigid black plastic pipe under the air box and above the O2 sensor. It's a coolant line, which some members have accidentally cracked while removing the O2 sensor.
+ Most parts stores will lend you a 7/8 inch socket, like a spark plug socket, but with a slot for wires of the O2 sensor.

This thread has a picture: https://www.jaguarforums.com/forum/x...ensors-126530/

Here's one on Amazon:

This thread has pictures to help locate the oxygen sensors, in your case, the Bank 2, upstream sensor: https://www.jaguarforums.com/forum/x...-where-129374/

The last picture in this thread shows how to loosen the old sensor with a 1/2 inch breaker bar, by reaching around the black plastic coolant line to avoid putting pressure on it: https://www.jaguarforums.com/forum/x...roblem-122960/

Good luck.