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P1221 Diagnostic Trouble Code Discussion for December 2005

TP Sensor 2 Signal Correlation


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Trouble Ticket Help Requests for DTC P1221
Help Request Posted
1995 Chevrolet Blazer 4.3L No Start, MIL Lamp on VIN: 1GNDT13W85
P1221: Fuel Pump Low Volts. ... for not running issues, customer stated that he has already changed the fuel pump relay (claims it would get real hot)and it would work for awhile then quit. We installed a new relay and checked all grounds and the truck would start, once started we were a...
December 05, 2005
1995 Chevrolet Blazer 4.3L No Start, MIL Lamp on VIN: 1GNDT13W85
P1221: Fuel Pump Low Volts. ... for not running issues, customer stated that he has already changed the fuel pump relay (claims it would get real hot)and it would work for awhile then quit. We installed a new relay and checked all grounds and the truck would start, once started we were a...
December 05, 2005