Description
OBD-II Trouble Code Description for P0107 Fiat
Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
What does this mean?
OBD2 Code P0107 Fiat definition:
The Manifold Absolute Pressure (MAP) sensor responds to changes in the intake manifold pressure (vacuum). 5 Volts is supplied to the sensor from the PCM (powertrain control module). Inside the MAP sensor is a resistor that moves in relation to manifold pressure. The resistor varies the voltage between about 1 volt to 4.5 volts (depending on engine load) and that voltage signal is returned to the PCM to indicate manifold pressure (vacuum). This signal is essential for the PCM to determine fuel delivery. A P0107 Fiat DTC is set when the PCM sees that the MAP signal voltage is less than .25 volts which is too low.
Symptoms
Possible sumptoms of OBD code P0107 Fiat
Anytime the MAP sensor signal is low the vehicle will likely have a very difficult time starting. Other symptoms may include: Hard to start Long cranking times Sputtering/missing Blowing black smoke Poor fuel economy Dies intermittently MIL(Malfunction Indicator Lamp) illumination
Causes
Possible causes of OBD code P0107 Fiat
Bad MAP sensor Open or short in the signal circuit Open or short in the 5 Volt reference circuit Ground circuit open or shorted Bad PCM
Possible Solutions
First, using a scan tool with the Key on and engine running, monitor the MAP sensor voltage. If it is reading less than .5 volts, turn engine off, unplug the MAP sensor and, using a DVOM (Digital Volt/Ohm Meter) check for 5Volts on the 5 Volt reference circuit. 1. If there is not 5 Volts on the reference circuit, then check for the reference voltage at the PCM connector. If it is present at the PCM connector but not the MAP connector, repair the open in the reference circuit between the PCM and MAP harness connector. If 5 Volt reference is NOT present at the PCM connector, check powers and grounds of PCM and repair/replace as needed. (NOTE: On Chrysler products, a shorted Crank sensor, Vehicle speed sensor or any other sensor that utilizes the 5 Volt reference from the PCM can short out the 5 Volt reference. To fix simply unplug each sensor one at a time until the 5 Volt reference reappears. The last sensor unplugged is the shorted sensor.) 2. If you have a 5 Volt reference at the MAP connector, jumper the 5 volt reference circuit to the signal circuit. Now check the MAP voltage on the scan tool. It should be 4.5 to 5 Volts. If it is, replace MAP sensor. If not, repair open/short in the signal circuit wiring and re-check. 3. If all appears okay, perform a wiggle test. Start engine and manipulate the harness, connector and tap on the MAP sensor. Note any changes in voltage or engine speed. Repair connector, harness, or sensor as needed. 4. If the wiggle test checks out, use a vacuum pump (or just use your lungs) to 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 approximately 4.5 volts. If there is no change in MAP sensor reading on the scan tool, replace MAP sensor.
The OBD2 Code Information Be Applicable For Fiat:
2013 Fiat Viaggio,2013 Fiat Strada,2013 Fiat Panda UK Version,2013 Fiat Panda Trekking,2013 Fiat Panda 4×4,2013 Fiat Panda,2013 Fiat 500S,2013 Fiat 500L,2013 Fiat 500C Abarth,2012 Fiat Punto,2012 Fiat Palio,2012 Fiat Freemont AWD,2012 Fiat Freemont,2012 Fiat 695 Abarth Maserati Edition,2012 Fiat 500 Abarth,2011 Fiat Uno,2011 Fiat Punto Evo Abarth esseesse,2011 Fiat Punto Evo Abarth,2011 Fiat Idea,2011 Fiat Bravo,2011 Fiat 500 Sport,2011 Fiat 500 Coupe Zagato Concept,2011 Fiat 500C Abarth esseesse,2011 Fiat 500C Abarth,2010 Fiat Uno Cabrio Concept,2010 Fiat Sedici,2010 Fiat Punto Evo,2010 Fiat Doblo Cargo,2010 Fiat Doblo,2010 Fiat 500 Abarth R3T,2010 Fiat 500C,2009 Fiat Grande Punto Natural Power,2009 Fiat Fiorino Qubo,2009 Fiat 695 Abarth Tributo Ferrari,2009 Fiat 500 Barbie Concept,2009 Fiat 500 Abarth esseesse,2009 Fiat 500 Abarth Assetto Corse,2009 Fiat 500 Abarth,2008 Fiat Portofino Concept,2008 Fiat Panda Cross,2008 Fiat Grande Punto Abarth,2008 Fiat Grande Punto,2008 Fiat Fiorino,2008 Fiat Croma,2008 Fiat Bravo 1.6 Multijet 16v,2008 Fiat 500,2007 Fiat Panda 100HP,2007 Fiat Linea,2007 Fiat Grande Punto Abarth S2000,2007 Fiat Grande Punto Abarth Preview,2007 Fiat Bravo,2006 Fiat Ulysse,2006 Fiat Sedici,2006 Fiat Panda Multi Eco Concept,2006 Fiat Panda Cross,2005 Fiat Panda Alessi,2005 Fiat Panda 4×4 1.3 Multijet,2005 Fiat Oltre Concept,2005 Fiat Idea,2005 Fiat Grande Punto,2005 Fiat Doblo Cargo,2005 Fiat Doblo,2005 Fiat Croma,2005 Fiat 600 50th,2004 Fiat Trepiuno Concept,2004 Fiat Strada Malibu,2004 Fiat Stilo M.Y. 1.9 Multijet 5door,2004 Fiat Seicento,2004 Fiat Punto Rally,2004 Fiat Panda 4×4,2004 Fiat Multipla,2004 Fiat Idea 5terre Concept,2003 Fiat Strada,2003 Fiat Punto Sporting,2003 Fiat Punto Rally,2003 Fiat Punto Natural Power,2003 Fiat Punto Dynamic,2003 Fiat Punto Active,2003 Fiat Panda Emotion,2003 Fiat Panda Dynamic,2003 Fiat Panda Actual,2003 Fiat Panda,2003 Fiat Marrakech Concept,2003 Fiat Idea 1.9 Multijet Dynamic,2003 Fiat Idea 1.4 16v Emotion,2003 Fiat Idea,2003 Fiat Barchetta First Class of Alviero Martini,2003 Fiat Barchetta,2002 Fiat Ulysse Emotion 2.0 16v,2002 Fiat Ulysse 2.0 JTD,2002 Fiat Ulysse,2002 Fiat Stilo Multi Wagon Dynamic,2002 Fiat Stilo Multi Wagon Actual,2002 Fiat Stilo Multi Wagon,2002 Fiat Stilo Dynamic,2002 Fiat Stilo Active,2002 Fiat Stilo Abarth,2002 Fiat Stilo,2002 Fiat Simba Concept,2002 Fiat Palio Weekend,2002 Fiat Palio,2002 Fiat Multipla,2002 Fiat Albea,2001 Fiat Doblo
Note:
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