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Home >> Toyota >> 2003 >> Tundra Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self Diagnostics - V6 >> Diagnostic Tests >> DTC P0121: Throttle Position Sensor Circuit Range/Performance >> Possible Causes

Possible Causes

This DTC uses two-trip detection logic. DTC is set when the difference between VTA and VTA2 is out of threshold for 2 seconds or more. Possible cause is a defective TP sensor.

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