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6/6/2009
Richard, Jaguar Technician
Category: Jaguar
Satisfied Customers: 16,756
Experience: 12 years at a Ford/Lincoln Mercury and Jaguar dealer as technician and shop foreman.
VerifiedHello and welcome to justanswer.com
The failsafe light can come on for a few reasons. It may be an electronic throttle or brake switch issue. I recommend that you go to your local autozone or parts store to have the stored codes read from the ECM as they will usually do this at no charge. Once you have the code numbers let me know what they are. Since you just had work done check to make sure that the air tube is still connected properly and the air flow meter is connected.
It is possible that one of the other codes is the reason the light is on. See if you can get the codes for me so I can assist you with the diagnosis and repair.
Richard, Jaguar Technician
Category: Jaguar
Satisfied Customers: 16,756
Experience: 12 years at a Ford/Lincoln Mercury and Jaguar dealer as technician and shop foreman.
VerifiedRichard and 87 other Jaguar Specialists are ready to help you
Ok The P1643 is for CAN communication between the ECM and TCM. This may be the cause of the failsafe light. Now that all the codes are cleared next time the light comes on stop in your local parts store or autozone and have them run a scan. If there are any stored codes let me know what they are.
Richard, Jaguar Technician
Category: Jaguar
Satisfied Customers: 16,756
Experience: 12 years at a Ford/Lincoln Mercury and Jaguar dealer as technician and shop foreman.
VerifiedRichard and 87 other Jaguar Specialists are ready to help you
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