DTC P0105: Map Sensor Circuit Range/Performance: Description

The ECM has internal tables that compare Manifold Absolute Pressure (MAP) sensor values with a calculated MAP table. The MAP sensor is a transducer that varies resistance according to changes in intake manifold pressure (vacuum). The voltage ranges from 1.0-1.5 volts at idle (low pressure/high vacuum) to 4.5-4.8 volts at wide open throttle (high pressure/low vacuum). The 2 Throttle Position (TP) sensors vary resistance according to changes in throttle plate position. The voltage ranges is from 2.94-3.34 volts at 33% throttle to 0.59 for TP1 and 1.86-4.39 volts for TP2. DTC P0105 sets when the values are out of the calibrated range from the table values.