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Code P1646

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Old 11-28-2018, 12:14 PM
bluser111's Avatar
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Default Code P1646
I changed the 02 sensor on my 2004 Jaguar x type (upstream bank1) When starting up, The code P1646 came right back. Whats next?
 
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Old 11-28-2018, 01:14 PM
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Firstly, did you use an OEM sensor or one of the cheap internet ones? Numerous posts on replacing the sensor with the cheap ones and having problems.

https://www.jaguarforums.com/forum/x...6-fixed-64133/

https://www.jaguarforums.com/forum/x...6-code-149457/

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Old 11-28-2018, 01:19 PM
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Just to be sure, you did change the upstream sensor on the firewall side of the engine, not the radiator side?
 
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Old 03-17-2019, 08:26 PM
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Exclamation P1646 issues - check the harness too
Sorry, deleted reply ...
 
Last edited by StagByTriumph; 03-17-2019 at 08:35 PM.
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