Question about 2003 Jaguar S-Type

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Check engine fault code 1646 - 2003 Jaguar S-Type

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P1646 is a defective heater circuit on an o2 sensor. (bank 1 sensor1)I'm assuming you have the 2.5 V6 petrol engine? Replace the upstream sensor on bank1 to cure problem.

Posted on May 28, 2011

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How do I fix a 2004 Jaguar S Type Fault code 1646


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I have a p1646 code on my jaguar x type i have changed the broken sensor and ping engine check light *** bk on can u please help its driving me mad


I would have the code checked again if it is still 1646 then you need to check the connector and wiring for this sensor.

Just to confirm that the sensor you changed is the rear (near the engine bay bulkhead) upstream (upper sensor of the two) , in most cases a grey connector.

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1 Answer

Igot a code P1647 can some one help


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Where is "check engine" sensor?


lol
thats a new one
there is no check engine sensor.
theres lots of different sensors take tell a computer to set a code and turn on that light.
ask autozone to check the codes for you for free.
its a free service they offer.
the codes will tell you whats wrong
probably an o2 sensor.
ask them if they have it in stock.

keep me posted
thank you
jm

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