O2 Sensors replaced, but the codes came back

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07-23-2017, 03:56 PM

belawidi

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O2 Sensors replaced, but the codes came back

Jaguar lovers,
I have a 2004 VDP. I've got the code P0037, P0057, P1646, P1647. I replaced the all 4 O2 sensors, but after a day of driving, all the codes came back.
Please guide me to the root cause.
Thanks,
belawidi

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07-23-2017, 07:03 PM

06-XJR

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Codes never say to replace parts, they merely tell you where to begin diagnosis. Could be a wiring or connector issue, etc. Did you use OEM sensors?

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07-23-2017, 07:14 PM

meirion1

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The 'probable cause" for both p0037 p0057 is wiring fault to earth

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