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P1221 Diagnostic Trouble Code Discussion for May 2007

TP Sensor 2 Signal Correlation

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Trouble Ticket Help Requests for DTC P1221
Help Request Posted
2002 Isuzu Axiom 3.5L Stall VIN: 4S2CE58X72
P1221: Throttle Position Sensor 1-2 Circuit Performance. Stalls at idle. Will restart but sometimes it may stall out again. Runs great all the time off idle, and stalling problem is extremely intermittant. We have driven several times, totaling over 50 miles, but unable to reproduce. Customer stated it only happens ...
May 21, 2007