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P1120 Diagnostic Trouble Code Discussion for March 2008

TP Sensor 1 Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1120
Help Request Posted
2001 Chevrolet Suburban 1500 5.3L Poor Idle Quality, Hesitation, MIL Lamp on VIN: 3GNEC16T91
P1120: TP Sensor 1 Circuit Malfunction. Customer complained of no throttle response and instrument cluster displays REDUCED ENGINE POWER.
March 18, 2008