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P1646 Diagnostic Trouble Code Discussion for February 2015

Hydraulic Cooling Fan Control Circuit Low


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Trouble Ticket Help Requests for DTC P1646
Help Request Posted
2000 Jaguar XJR 4.0L MIL Lamp on VIN: SAJDA15B9Y
P1646: Fuel Pump Relay 2. ... 4.0L, the type that has the 2 fuel pumps in the fuel tank. The MIL is on and has a P1646, fuel pump relay 2. So I figured this wouldn't be too difficult. I started in the trunk where the relays are. I could prove that fuel pump 1 was energized and that fue...
February 18, 2015
2000 Jaguar XJR 4.0L MIL Lamp on VIN: SAJDA15B9Y
P1646: Fuel Pump Relay 2. ... 4.0L, the type that has the 2 fuel pumps in the fuel tank. The MIL is on and has a P1646, fuel pump relay 2. So I figured this wouldn't be too difficult. I started in the trunk where the relays are. I could prove that fuel pump 1 was energized and that fue...
February 23, 2015