DTC P0107 - MAP SENSOR CIRCUIT LOW VOLTAGE Pontiac Firebird IV

Note. For circuit reference, see the appropriate WIRING DIAGRAMS article. For connector and terminal identification, see CONNECTOR IDENTIFICATION .

Circuit Description

Manifold Absolute Pressure (MAP) sensor measures pressure changes within intake manifold to indicate engine load. MAP sensor is mounted on top of intake manifold. MAP sensor has a 5-volt reference circuit, ground and a signal circuit.

MAP sensor voltage (depending on altitude) can range from 1.0-1.5 volts at idle (high vacuum) to 4.0-4.9 volts at wide open throttle (low vacuum). When PCM senses a signal voltage lower than normal operating range of sensor, DTC will set.

DTC will set when following conditions are present

1. No TP sensor DTCs set.
2. TP angle more than 15 percent.
3. MAP is less than .24 volt.
4. Conditions met for 4.5 seconds.