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Home >> Pontiac >> 2007 >> Vibe Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - DTC P0452 To DTC P2138 >> DTC P2121 >> Conditions for Setting the DTC
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Conditions for Setting the DTC

The difference between APP sensor 1 voltage and APP sensor 2 voltage is less than 0.4 volts for less than 1 second.

OR

The difference between APP sensor 1 voltage and APP sensor 2 voltage is more than 1.2 volts for less than 1 second.