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Richard, Jaguar Technician
Category: Jaguar
Satisfied Customers: 15556
Experience:  12 years at a Ford/Lincoln Mercury and Jaguar dealer as technician and shop foreman.
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My s type seems to loose compression when the engine gets

Customer Question

my s type seems to loose compression when the engine gets hot, can this be because the fault code p1647
Submitted: 1 year ago.
Category: Jaguar
Expert:  Richard replied 1 year ago.

That code P1647 is for the upstream oxygen sensor on bank 2 which is the left side exhaust. Usually this will not cause any performance or driving issue. If we are losing compression then we need to perform a leak down test to see if we may have a problem with the headgasket. Let me know.