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Hello
This code is usually there in Jaguar cars with no effect , until you see an actual problem , I would not bother with it
This code means : Fuel Sender Circuit Failure
Which would be resolved if you change the Fuel sender unit which is located in the tank , but some models come with the fuel pump and that tend to be expensive
Hi. Thanks for your question. There could be diffrent reasons for DTC p0638 . for more information you can also visit https://www.reliable-store.com and download the entire workshop manual which includes all the information along with the diagrams for better understanding. Good day!
Damaged CKP sensor connector Damaged reluctor ring (missing teeth or not turning due to sheared-off keyway) Sensor output open Sensor output shorted to ground Sensor output shorted to voltage Failed crank sensor Broken timing belt Failed PCM are probable causes
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