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Richard, Jaguar Technician
Category: Jaguar
Satisfied Customers: 15545
Experience:  12 years at a Ford/Lincoln Mercury and Jaguar dealer as technician and shop foreman.
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1999 xj8 withn a p1647 code. check engine light on . engine

Customer Question

1999 xj8 withn a p1647 code. check engine light on . engine hesitates part throttle runs rough
Submitted: 8 years ago.
Category: Jaguar
Expert:  Richard replied 8 years ago.

Hello and welcome to


P1647 is for the B bank upstream oxygen sensor. This will be the front sensor on the passenger side cat converter. It's the one with a grey connector. That code is usually caused by the sensor but I have also seen issues with the harness going to the sensor.