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Impala LS
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Engine Control System Self-Diagnostics - 3.8L
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Diagnostic Tests
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DTC P0121: TP Sensor Performance
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Conditions For Setting DTC
Conditions For Setting DTC
The TP sensor voltage is more than a predicted value when the MAP is below 50 kPa.
The TP sensor voltage is less than a predicted value when the MAP is above 70 kPa.
Conditions are met for 10 seconds.