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Home >> Chevrolet >> 2009 >> TrailBlazer 4.2 S, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 4.2L - DTC P0013 To P0365 >> DTC P0068 or P0121 >> DTC Descriptors

DTC Descriptors

DTC P0068: Throttle Body Airflow Performance
DTC P0121: Throttle Position (TP) Sensor 1 Performance

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