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P1646 Diagnostic Trouble Code Discussion for July 2016

Hydraulic Cooling Fan Control Circuit Low


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Trouble Ticket Help Requests for DTC P1646
Help Request Posted
2001 Jaguar XKR 4.0L Hesitation, MIL Lamp on VIN: SAJDA42B31
P1646: Fuel Pump 2 Relay Malfunction. This code pertains only to the SC model only according to Alldata. It states the #2 fuel pump relay has a malfunction or a wiring issue from relay to pump. We checked the wiring and replaced the relays. No burned connections of connection issues.
July 05, 2016