Description
OBD-II Trouble Code Description for P0150 Audi
O2 Sensor Circuit
What does this mean?
OBD2 Code P0150 Audi definition:
The O2 sensor produces a voltage based on oxygen content in the exhaust. The voltage varies between .1 and .9 Volts, .1 indicating lean and .9 indicating rich. The ECM constantly monitors this voltage while in closed loop to determine how much fuel to inject. If the ECM determines that the O2 sensor voltage was too low (less than .4 Volts) for too long (for more than 20 seconds (time varies with model)), this code is set. The code P0150 Audi definition:Bank 2.
Symptoms
Possible sumptoms of OBD code P0150 Audi
Depending if the problem is intermittent or not, there may be no symptoms other than MIL (malfunction indicator lamp) illumination. If the problem is constant, then symptoms may include one or more of the following: MIL illumination Engine runs rough, missing or stumbling Blows black smoke from tail pipe Engine dies Poor fuel economy
Causes
Possible causes of OBD code P0150 Audi
Usually the cause of P0150 Audi is a bad oxygen sensor, however this isn’t always the case. If your o2 sensors haven’t been replaced and they are old, it’s a good bet that the sensor is the problem. But, It could be caused by any of the following: Water or corrosion in the connector Loose terminals in the connector Wiring burnt on exhaust components Open or short in the wiring due to rubbing on engine components Holes in exhaust allowing unmetered oxygen into exhaust system Unmetered vacuum leak at the engine Bad o2 sensor Bad PCM
Possible Solutions
Using a scan tool, determine if the Bank 2, sensor 1 is switching properly. It should switch rapidly between rich and lean, evenly. 1. If it does, the problem is likely intermittent and you should examine the wiring for any visible damage. Then perform a wiggle test by manipulating the connector and wiring while watching the o2 sensor voltage. If it drops out, fix the appropriate part of the wiring harness where problem resides. 2. If it doesn’t switch properly, try to determine if the sensor is accurately reading the exhaust or not. Do this by removing the fuel pressure regulator vacuum supply briefly. The o2 sensor reading should go rich, reacting to the extra fuel added. Reinstall regulator supply. Then induce a lean condition by removing a vacuum supply line from the intake manifold. The o2 sensor reading should go lean, reacting to the enleaned exhaust. If the sensor operates properly, then the sensor may be okay and the problem may be holes in the exhaust or an unmetered vacuum leak in the engine (NOTE: Unmetered vacuum leaks at the engine are almost always accompanied by lean codes. Refer to the appropriate articles for diagnosing an unmetered vacuum leak). If the exhaust does have holes in it, it’s possible that the o2 sensor may be misreading the exhaust because of the extra oxygen entering the pipe via those holes 3. If none of this is the case and the o2 sensor just isn’t switching or acts sluggish, unplug the sensor and make sure there is 5 Volt reference voltage to the sensor. Then check for 12V supply to the o2 sensor’s heater circuit. Also check for continuity to ground on the ground circuit. If any of these are missing, or aren’t their proper voltage, repair open or short in the appropriate wire. The o2 sensor will not operate properly without proper voltage. If the proper voltages are present, replace the o2 sensor.
The OBD2 Code Information Be Applicable For Audi:
2013 Audi TT ultra quattro Concept,2013 Audi TT RS plus,2013 Audi TTS Roadster competition,2013 Audi TTS Coupe competition,2013 Audi Sport quattro Concept,2013 Audi SQ5 TDI,2013 Audi S8,2013 Audi S7 Sportback,2013 Audi S6 Avant,2013 Audi S6,2013 Audi S4 Avant,2013 Audi S4,2013 Audi RS5 DTM,2013 Audi RS4 Avant,2013 Audi R8 e-tron Concept,2013 Audi R8 V10 plus,2013 Audi R8 V10 Spyder,2013 Audi R8 V10,2013 Audi R8,2013 Audi Q5,2013 Audi Nanuk quattro Concept,2013 Audi A8 L Hybrid,2013 Audi A8 Hybrid,2013 Audi A6 allroad quattro,2013 Audi A6 Black Edition,2013 Audi A4 allroad quattro,2013 Audi A4 Avant,2013 Audi A4,2013 Audi A3 e-tron Concept,2013 Audi A3,2013 Audi A1 quattro,2012 Audi e-bike Worthersee Concept,2012 Audi S5 Sportback,2012 Audi S5 Cabriolet,2012 Audi S5,2012 Audi RS Q3 Concept,2012 Audi RS5,2012 Audi RS3 Sportback,2012 Audi R8 GT Spyder,2012 Audi R8 Exclusive Selection,2012 Audi Q5 Hybrid quattro,2012 Audi Q3 Vail Concept,2012 Audi Q3 Jinlong Yufeng Concept,2012 Audi Q3,2012 Audi Crosslane Coupe Concept,2012 Audi A8 L Security,2012 Audi A6 L e-tron Concept,2012 Audi A6 Hybrid,2012 Audi A6 Avant,2012 Audi A6,2012 Audi A5 Sportback,2012 Audi A5 DTM,2012 Audi A5 Coupe,2012 Audi A5 Cabriolet,2012 Audi A1 amplified,2012 Audi A1 Sportback,2011 Audi Urban Spyder Concept,2011 Audi Urban Concept,2011 Audi TT Roadster,2011 Audi TT Coupe,2011 Audi TTS Roadster,2011 Audi TTS Coupe,2011 Audi S5 Sportback,2011 Audi RS5,2011 Audi R8 Spyder 5.2 FSI quattro,2011 Audi R8 Spyder 4.2 FSI quattro,2011 Audi R8 GT,2011 Audi R18,2011 Audi Q7,2011 Audi A8 L,2011 Audi A8,2011 Audi A7 Sportback,2011 Audi A3 e-tron Concept,2011 Audi A3 Sportback,2011 Audi A3 Concept,2011 Audi A3 Cabriolet,2011 Audi A3,2011 Audi A2 Concept,2011 Audi A1 clubsport quattro Concept,2011 Audi A1,2010 Audi quattro Concept,2010 Audi e-tron Spyder Concept,2010 Audi e-tron Concept,2010 Audi TT RS Roadster,2010 Audi TT RS,2010 Audi TT GT4 Concept,2010 Audi S5 Cabriolet,2010 Audi R8 V10 5.2 FSI quattro,2010 Audi Q7,2010 Audi A8 Hybrid Concept,2010 Audi A5 Sportback,2010 Audi A5 Cabriolet,2010 Audi A4 allroad quattro,2010 Audi A1 e-tron Concept,2009 Audi e-tron Concept,2009 Audi TTS Roadster,2009 Audi TTS Coupe,2009 Audi Sportback Concept,2009 Audi S6 Avant,2009 Audi S6,2009 Audi S4 Avant,2009 Audi S4,2009 Audi S3 Sportback,2009 Audi S3,2009 Audi RS6,2009 Audi R8 GT3,2009 Audi Q7 V12 TDI,2009 Audi Q5 Custom Concept,2009 Audi Q5,2009 Audi A6 allroad quattro,2009 Audi A6 Avant,2009 Audi A6,2009 Audi A4 Avant,2009 Audi A4,2009 Audi A3 Sportback,2009 Audi A3,2008 Audi TT clubsport quattro Concept,2008 Audi TT Roadster 3.2 quattro,2008 Audi TT Coupe,2008 Audi S8,2008 Audi S6,2008 Audi S5,2008 Audi S4 Cabriolet,2008 Audi RS6 Avant UK Version,2008 Audi RS6 Avant,2008 Audi RS4 Cabriolet,2008 Audi RS4,2008 Audi R8 V12 TDI Concept,2008 Audi R8 TDI Le Mans Concept,2008 Audi R8,2008 Audi Q7,2008 Audi A8 L,2008 Audi A8 4.2 TDI quattro,2008 Audi A8L W12 quattro,2008 Audi A8,2008 Audi A6 Avant,2008 Audi A6,2008 Audi A5 3.0 TDI quattro,2008 Audi A5,2008 Audi A4 US Version,2008 Audi A4 TDI Concept e,2008 Audi A4 Cabriolet,2008 Audi A4,2008 Audi A3 US Version,2008 Audi A3 TDI clubsport quattro Concept,2008 Audi A3 Cabriolet,2008 Audi A1 Sportback Concept,2007 Audi metroproject quattro Concept,2007 Audi TT clubsport quattro Concept,2007 Audi TT Roadster 2.0 TFSI,2007 Audi TT Roadster,2007 Audi TT Coupe S-line,2007 Audi TT Coupe,2007 Audi S3,2007 Audi R8,2007 Audi Q7 V12 TDI Concept,2007 Audi Q7 V12 TDI,2007 Audi Cross Coupe quattro Concept,2007 Audi Cross Cabriolet quattro Concept,2006 Audi S8,2006 Audi S6 Avant,2006 Audi S6,2006 Audi S4 Cabriolet,2006 Audi Roadjet Concept,2006 Audi RS 4 Cabriolet,2006 Audi RS 4 Avant,2006 Audi RS4,2006 Audi Q7,2006 Audi A8 Security,2006 Audi A6 allroad quattro,2006 Audi A4 Cabriolet,2006 Audi A3 2.0T,2005 Audi allroad quattro V8 4.2,2005 Audi allroad quattro V6 2.7T,2005 Audi TT quattro sport,2005 Audi TT Roadster 3.2,2005 Audi TT Roadster 1.8T,2005 Audi TT Coupe 3.2,2005 Audi TT Coupe 1.8T,2005 Audi Shooting Brake Concept,2005 Audi S4 Cabriolet,2005 Audi S4 Avant,2005 Audi S4,2005 Audi RS4,2005 Audi Q7 Hybrid Concept,2005 Audi Allroad quattro Concept,2005 Audi A8 L W12,2005 Audi A8 L 4.2,2005 Audi A8 4.2 TDI quattro,2005 Audi A8 4.2,2005 Audi A8 3.2 FSI quattro,2005 Audi A8L 4.2 TDI quattro,2005 Audi A6 Avant,2005 Audi A6 4.2 quattro Sline,2005 Audi A6 3.2,2005 Audi A6 3.0 TDI quattro,2005 Audi A6L,2005 Audi A4 DTM Edition,2005 Audi A4 Cabriolet,2005 Audi A4 Avant 3.2 quattro,2005 Audi A4 3.2 quattro,2005 Audi A4 3.0 TDI quattro,2005 Audi A4 2.0T,2005 Audi A3 2.0 TDI 3-door,2004 Audi S4 Cabriolet,2004 Audi RSQ Concept,2004 Audi RS6 plus,2004 Audi A8 L 6.0 W12 quattro,2004 Audi A8 L 3.0 quattro,2004 Audi A8 4.2 quattro,2004 Audi A8 3.7 quattro,2004 Audi A8 3.0 TDI quattro,2004 Audi A8,2004 Audi A3 Sportback quattro,2004 Audi A3 Sportback S-line,2004 Audi A3 Sportback,2004 Audi A3 3-door,2003 Audi allroad quattro,2003 Audi TT Roadster 3.2 quattro,2003 Audi TT 3.2 DSG quattro,2003 Audi Pikes Peake quattro Concept,2003 Audi Nuvolari quattro Concept,2003 Audi Le Mans quattro Concept,2003 Audi A8 L 4.2 quattro,2003 Audi A8 4.0 TDI quattro,2003 Audi A4,2003 Audi A3 3.2 V6 3-door,2003 Audi A3 3-door,2003 Audi A2,2002 Audi allroad quattro 4.2,2002 Audi allroad quattro,2002 Audi TT Roadster,2002 Audi S6 Avant,2002 Audi S6,2002 Audi S4 Avant,2002 Audi S4,2002 Audi S3,2002 Audi RS6 Sedan,2002 Audi RS6 Avant,2002 Audi RS6,2002 Audi A6,2002 Audi A4 Cabriolet 3.0,2002 Audi A4 Cabriolet 2.4,2002 Audi A4 Cabriolet 1.8 T,2002 Audi A4 Cabriolet,2002 Audi A4 Avant,2002 Audi A4,2002 Audi A3 3-door,2002 Audi A2,2001 Audi TT Coupe,2001 Audi Avantissimo Concept,2001 Audi A8 L 6.0 quattro,2001 Audi A6 Avant,2001 Audi A6,2001 Audi A4 Avant,2001 Audi A4
Note:
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