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Home >> Chevrolet >> 1999 >> Tracker 4D Utility, RWD, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Tests >> DTC P0121: Throttle Position (TP) Sensor Performance >> Condition For Setting DTC

Condition For Setting DTC

Difference between expected TP sensor input and actual input is greater than specified value for at least 3 seconds.