My 2003 XKR is showing a check engine light and giving a P0057 code.

I understand that this relates to the lower heated oxygen sensors.
My question is do I replace these singly, in pairs, or do I need to do all 4?
Car has 90,000 miles on it.

Also can anyone recommend a cheap supplier in the UK?


Thanks.
Rob

 

Rob,

P0057 could be a harness fault rather than the 2/2 HO2 Sensor itself. Worth a check but we're not often that lucky with a Jaguar!

As it's only giving a code on the downstream you could only replace this individual sensor. My preference is to replace in pairs (upstream or downstream as appropriate) rather than all four purely on cost.

You've probably already found there's a huge cost difference between OE Jaguar and aftermarket sensors. The disadvantage with aftermarket is they usually don't have the right harness connector which involves splicing wires.

Graham

 

Thanks Graham.
When you say pairs, do you mean upper & lower on one side or is it both lowers?

Rob.

 

Hello Champer;

In all Jaguars, it is always worth it to disconnect each related electrical connector (I think 2 links per O2 sensor) and spray in some electrical contact cleaner before doing anything else!


On the other hand, your problem may not be so simple. I have a 2002 XK8 and it's been shooting error codes on all 4 O2 sensors for months now (I think they are P0031, P0037, P0051, P0057), in addition to P0010 and P0020 both related to VVT. All those faults together do not cause yellow or red error messages on the cashboard and I only knew about them from an OBD check.

Don't know if the 2003 models takes its sensors more seriously, or maybe you have another problem somewhere else.

Good luck!