When it says the map sensor voltage is too high, this means that too much voltage is reaching the sensor. This can be a result of a failed component or a shorted wire coming into the sensor.
Map sensor circuit voltage highMap sensor circuit voltage high
Low voltage (high vacuum) at mass air flow sensor (or MAP sensor).
That is a MAP sensor code, check to see if the sensor is returning at least .5 volts, if not check for 5 volt reference voltage on the connector. If you have voltage going in, and none or less coming back out replace the sensor, if no reference voltage check the connectors, wiggle them and monitor the voltage. If the wiggle test checks out, draw a vacuum on the MAP sensor vacuum port. As you add vacuum the voltage should decrease. With no vacuum, the MAP sensor should read around 4.5 volts. If there is no change in MAP sensor reading on the scan tool, replace MAP sensor.
VoltageVoltage
Typical Readings: Sensor output voltage range is 0.5 to 4.5 volts. Output voltages between 0.5 and 1.5 volts indicate a high vacuum (low pressure) situation, such as idle or deceleration. Output voltages between 1.5 and 3.0 volts indicate a medium level of vacuum (pressure) such as a cruise or slight acceleration condition. Output voltages between 3.0 and 4.5 volts indicate a low vacuum (high pressure) situation such as hard acceleration or a mechanical failure. Any reading of 0 volts or over 4.5 volts indicates a problem. NOTE: The following procedure tests the MAP sensor only. Inspect the rubber nipple (fitting) from the MAP sensor to the throttle body. Repair as necessary. CAUTION: When testing the MAP sensor, be sure that the harness wires are not damaged by the test meter probes. Test the MAP sensor output voltage at the MAP sensor connector terminal B. With the ignition switch ON, and the engine OFF. Output voltage should be 4 to 5 volts. Test the MAP sensor output voltage at the MAP sensor connector terminal B at a hot, neutral idle speed condition. The voltage should drop to 1.5 to 2.1 volts. Test MAP sensor supply voltage at sensor connector terminal C with the ignition ON. The voltage should be approximately 5 volts (±O.5 V). As always, check the service manual for the proper procedures and specifications for your particular vehicle.
The map sensor measures intake manifold vacuum . The signal is varied from high to low, this voltage signal change along with the throttle position sensor,vehicle speed sensor, o2 sensor, the computer uses the signals to vary injector pulse width.
5 volt supply, sensor ground and signal voltage.5 volt supply, sensor ground and signal voltage.
P0108 is map sensor volts too high. The map sensor could be bad, or the wiring could be broken. The map sensor bolts to the rear of the intake on the 4cyl.
p0108 is map sensor signal high. Replace map sensor
Code 33: Mass air flow (MAF) sensor Signal voltage or frequency is high during engine idle OR Manifold absolute pressure (MAP) sensor Signal voltage is high during engine idle. Engine misfire or unstable idle may cause this code.
Map sensor voltage low.
MAP sensor circuit low.MAP sensor circuit low.