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Richard
Richard, Jaguar Technician
Category: Jaguar
Satisfied Customers: 15388
Experience:  12 years at a Ford/Lincoln Mercury and Jaguar dealer as technician and shop foreman.
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2003 jag. 1647code. Change ghest positioned o2 censor way up

Customer Question

2003 jag. 1647code. Change highest positioned o2 censor way up top. Just under the horizontal coolant hose. Cleared it light came back while driving
Submitted: 1 year ago.
Category: Jaguar
Expert:  Richard replied 1 year ago.

Hello and thanks for using justanswer.com

Did you use a Jag part?

Did you replace it on the front or bank exhaust?

Customer: replied 1 year ago.
I think it was a 68$ one from auto z.....rand it was the one front up top pointing to the cooling fan
Customer: replied 1 year ago.
The one in the highest spot and no it I am sure was an after market one
Expert:  Richard replied 1 year ago.

Ok yes that code usually indicates a bad sensor and it is the top upper sensor on the front exhaust. I do see issues with aftermarket sensors which is why I recommend the Jag parts. We should make sure we have voltage to the heater so we will need a digital multimeter to test the circuit.