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P1221 Diagnostic Trouble Code Discussion for August 2005

TP Sensor 2 Signal Correlation


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Trouble Ticket Help Requests for DTC P1221
Help Request Posted
2000 Isuzu Rodeo LS 3.2L No Start, Stall, MIL Lamp on VIN: 4S2DM58W9Y
P1221: Throttle Position Sensor 1-2 Circuit Performance. We have this rodeo that will shut off and fail to restart for about 20 minutes every time it is run for about 10 minutes and gets hot. The reference voltage for tps #2 and aps #2 drops to about 280mv when this happens. When the 5 volt reference returns the veh...
August 03, 2005