2003 Pontiac Grand Prix 3.8 ltr PO108 Manifold Absolute Pressure/BARO sensor high input what should i look for

code p 0108 refers to manifold absolute pressure(MAP) sensor / barometric pressure (BARO) sensor ---high input===causes ---wiring short to positive--MAP sensor ---BARO sensor --- ECM

P0108 - Manifold absolute pressure (MAP) sensor/barometric pressure (BARO) Sensor - high input. Probable cause, Wiring short to positive, MAP sensor, BARO sensor, ECM.

Possible causes P406 include EGR Valve clogged, dirty or leaky
- EGR valve damaged/defective
- EGR volume control solenoid valve
- EGR temperature sensor and circuit
- EGR volume control solenoid valve harness is open or shorted
- EGR volume control solenoid valve circuit poor electrical connection
Possible causes P0108 - Faulty Manifold Absolute Pressure sensor
- Manifold Absolute Pressure harness is open or shorted
- Manifold Absolute Pressure sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)

code po108 refers to manifold absolute pressure ( MAP) sensor/ barometric pressure (BARO) sensor---high input====causes--wiring short to positive---MAP sensor---BARO sensor---ECM
Check the MAP sensor first and replace if necessary

codes p0068 refer to Manifold pressure sensor/mass air flow sensor--throttle position correlation--causes ---wiring---map sensor---maf sensor--mechanical fault.
code p0108 refers to manifold absolute pressure(map) sensor/barometric pressure (BARO) sensor--high input. causes ---wiring short to positive---map sensor---baro sensor---ecm.

Change the throttle sensor first, and see if the map sensor is a victum. throttle sensor is similar to an old volume reostat, on some cars and everything else tries to do react, and everything errors out.... My bet is throttle position sensor... But you never know, it CAN be both, just usually not both.

HI. The code and its respective definition will be located below:

P0108 --- Manifold Absolute Pressure/Barometric Pressure Circuit High

Here are a few possible causes for the high signal transfer of the circuit:

• Leaking EGR valve
• Vacuum leaks
• Dirty fuel injectors
• Wrong fuel pressure
• Low engine compression
• Ignition miss
• Carbon deposits on the intake valves
• Valve problems

Check the engine for the above faults. If all the points above check out Ok; Replace the MAP sensor.

the problem is youer map sensor or wirers to sensor
code p0108.is Manifold Absolute Pressure/Barometric Pressure Circuit High Input

Try unplugging and plugging the map sensor, this device should have manifold pressure hooked up to it, via hose, so check for cracks or leaks. Then clear codes and test again.

PO108 (map circuit high input) MAP is manifold absolute pressure... a sensor normally mounted on the intake. your code is suggesting a problem with this sensor, or its circuitry.