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P1221 Diagnostic Trouble Code Discussion for June 2007

TP Sensor 2 Signal Correlation

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Trouble Ticket Help Requests for DTC P1221
Help Request Posted
2000 Chevrolet Tahoe 5.3L Poor Idle Quality, MIL Lamp on VIN: 1GNEC137XY
P1221: TP Sensor 2 Signal Correlation. hi gus we have this tahoe with p1221. customer complain is mil and reduced engine power on.cold engine vehicle has no power customer turned key off waited 2 minutes and restarted vehicle.it ran good again. Another technician pulled dtc but he did not get freez...
June 28, 2007