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Ronnie, ASE Certified Technician
Category: Jaguar
Satisfied Customers: 35601
Experience:  34 years as an Automotive tech
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Checked rear fuse,swapped relays c6 and c7 ,replaced the REM

Customer Question

checked rear fuse,swapped relays c6 and c7 ,replaced the REM module,still shows the P1641 FUEL PUMP PRIMARY CIRCUIT FAILURE,car sputters,shows 93 psi,and car is int restricted performance
Submitted: 1 year ago.
Category: Jaguar
Expert:  Ronnie replied 1 year ago.
Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.The information is pretty limited on this fault code but here is what is offered. Check the primary fuel pump control circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair circuit as required. Clear DTC and retest. If fault persists, check and install a new primary fuel pump module as required. See the wiring diagram in the link below for reference.