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Home >> Chevrolet >> 2001 >> Impala Base, 3.4 E >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Control System Self-Diagnostics - 3.8L) >> Diagnostic Tests >> DTC P0121: TP Sensor Performance >> Code Enable Criteria

Code Enable Criteria

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DTC sets when TP sensor reading is more than a predicted value when MAP is less than 50 kPa, or TP sensor reading is less than a predicted value when MAP is more than 70 kPa. Condition must be present for more than 10 seconds.