Hello all. New member here. The engine light came on yesterday on my 2013 Jaguar XF 3.0L AWD. I plugged my code reader and got "P0042" fault code. The O2 open circuit. This fault code points to O2 sensor Bank 1, sensor 3. Is this correct?
I'm assuming 3 sensors on each side. Can anyone help with a Jaguarparts.com part number please for this sensor.
Also is there a fuse I should look at first. Could someone kindly tell location of the fuse if there is one.
Thanks in advance for your assistance.

 

O2 sensor codes are common in these cars. Bank 1, sensor 3 will be on right side behind transmission. Easy replacement.

 

I found part number C2D54167 at jaguarparts.com. It is same for Right and Left. Is this correct? Fault code is P0042.

 

Also found Denso part 234-4794. This is available on Amazon and significantly cheaper. Does anyone know if this part will work for Bank 1, Sensor 3.

 

Downstream O2 sensor was very easy to remove.
Both right and left (Bank 1 & Bank 2) sensors are identical. Numbers on the sensor are LSF-XFP50
DX23-9G444-FA. 0258030034
209061A
Made in Germany




Bank 1 sensor 3 LSF-XFP50 DX23-9G444-FA

 

Replaced Bank 1 Sensor 3 with Denso part number mentioned above.

After replacing the o2 sensor

After driving for approximately 10 miles

Bottom right is the Bank 1 sensor 3 data

 

To add on some helpful information:

I've seen on YouTube testing the ohm readings for the sensor to work on a multimeter, and they always say the two black cables. In common Jaguar fashion, there's four different colors (at least under my X351).

Lowest ohm resistance (200 or 400)
Touch white & red wires, and you should get a reading of 3-14 (Source: ChatGPT).

Testing Bank 1 Sensor 3, (CEL P0042) gave me an ohm resistance of 1-2, then eventually fluctuating to 15 for a split second, whereas testing Bank 2 Sensor 3 was 2.6 and stable.
Location wise, the plugs are behind a small metal plate located in the rear of the transmission.