Description
OBD-II Trouble Code Description for P0142 Chevrolet
O2 Sensor Circuit
What does this mean?
OBD2 Code P0142 Chevrolet definition:
The oxygen sensors are critical to the engine running properly. It basically informs the PCM (Powertrain Control Module) of oxygen content of the exhaust. The PCM then uses this information to regulate fuel injector pulse. Inaccurate or faulty O2 sensors can cause the PCM to add or take away fuel based on the faulty O2 sensor voltage which can cause a host of problems. A P0142 Chevrolet code definition:the Bank 1,3 O2 sensor or the 3rd downstream (post-cat) O2 sensor on Bank 1. It is a four wire sensor. The PCM supplies a ground circuit and a reference voltage circuit of about 0.5 volts. Also for the O2 sensor heater element there is a battery voltage supply wire and another ground circuit for that. The O2 sensor heater allows the O2 sensor to warm up faster, thus achieving closed loop in less time than it would normally take for the exhaust to warm the sensor up to operating temperature. The O2 sensor varies the supplied reference voltage based on oxygen content in the exhaust. It is capable of varying from about 0.1 to 0.9 volts, 0.1v indicating lean exhaust and 0.9v indicating rich exhaust. This P0142 Chevrolet code indicates that the Bank 1,3 O2 sensor is stuck low for too long or isn’t active at all.
Symptoms
Possible sumptoms of OBD code P0142 Chevrolet
Often post-cat O2 sensor problems present few symptoms since they are inputs to the PCM to monitor catalytic converter quality and don’t directly control fuel. sometimes no symptoms are noticeable. However the following may be possible on some vehicles: MIL (Malfunction Indicator Lamp) illumination Decrease in MPG Increase in tailpipe emissions
Causes
Possible causes of OBD code P0142 Chevrolet
Potential causes of a P0142 Chevrolet code include: Bad O2 sensor Signal shorted to voltage Wiring problems due to contact with exhaust components Holes in exhaust near O2 sensor
Possible Solutions
If you have access to a scan tool, check the signal voltage for the Bank 1,3 oxygen sensor with the engine at normal operating temperature. Is it stuck low currently? If so, increase RPM for a few seconds and see if it affects the reading. If it begins working with increased RPM, check for holes in the exhaust near the O2 sensor that may cause a false lean. If the exhaust pipe is intact, the sensor is sluggish, replace it. If the Bank 1,3 O2 sensor voltage reading remains low with increased RPM, unplug it and then observe the reading. It should have increased to about 0.5 volts or thereabouts. If it did, check for water intrusion or other connector problems. If none are found, replace the shorted O2 sensor. If the voltage reading is still stuck low after unplugging the sensor, then suspect a wiring problem. Using a voltmeter, with the O2 sensor unplugged, check for voltage on the signal circuit at the O2 sensor connector (PCM side). It can vary with model, but should be about 0.5 volts and not above 1 volt. If the voltage reading is too high, repair short to voltage on signal circuit. If the signal voltage checks out, suspect the PCM.
The OBD2 Code Information Be Applicable For Chevrolet
2013 Chevrolet Traverse2013 Chevrolet Trailblazer2013 Chevrolet Spark2013 Chevrolet Sonic RS2013 Chevrolet Onix2013 Chevrolet Malibu ECO2013 Chevrolet Malibu2013 Chevrolet Cruze Station Wagon2013 Chevrolet Corvette 427 Convertible2013 Chevrolet Camaro ZL1 Convertible2013 Chevrolet Camaro Hot Wheels Edition2013 Chevrolet Camaro 1LE2012 Chevrolet Tru 140S Concept2012 Chevrolet Sonic Sedan2012 Chevrolet Sonic2012 Chevrolet Silverado2012 Chevrolet Orlando2012 Chevrolet Cruze Hatchback2012 Chevrolet Corvette Z06 Centennial Edition2012 Chevrolet Corvette Daytona Racecar2012 Chevrolet Colorado2012 Chevrolet Code 130R Concept2012 Chevrolet Captiva2012 Chevrolet Camaro ZL12012 Chevrolet Camaro EU Version2012 Chevrolet Camaro Convertible EU Version2012 Chevrolet Camaro COPO Convertible2012 Chevrolet Camaro COPO2012 Chevrolet Camaro 67 Hot Wheels Concept2012 Chevrolet Camaro 45th Anniversary Edition2012 Chevrolet Aveo Sedan2011 Chevrolet Volt2011 Chevrolet TrailBlazer Concept2011 Chevrolet Silverado HD2011 Chevrolet Sail2011 Chevrolet Miray Concept2011 Chevrolet Cruze2011 Chevrolet Corvette Z06 Carbon Limited Edition2011 Chevrolet Colorado Rally Concept2011 Chevrolet Colorado Concept2011 Chevrolet Caprice Police Patrol Vehicle2011 Chevrolet Camaro SS Convertible Indy 500 Pace Car2011 Chevrolet Camaro Convertible Neiman Marcus2011 Chevrolet Camaro Convertible2011 Chevrolet Aveo2010 Chevrolet Volt MPV5 Concept2010 Chevrolet Spark2010 Chevrolet Equinox2010 Chevrolet Corvette Z06X Concept2010 Chevrolet Corvette Grand Sport2010 Chevrolet Camaro Transformers2010 Chevrolet Camaro SS Indy 500 Pace Car2010 Chevrolet Camaro SSX Concept2010 Chevrolet Camaro SS2010 Chevrolet Camaro Red Flash Concept2010 Chevrolet Camaro2010 Chevrolet Aveo RS Concept2010 Chevrolet Agile2009 Chevrolet Traverse2009 Chevrolet Stingray Concept2009 Chevrolet Cruze WTCC2009 Chevrolet Cruze2009 Chevrolet Corvette ZR12009 Chevrolet Corvette GT12009 Chevrolet Aveo52008 Chevrolet Orlando Concept2008 Chevrolet Matiz2008 Chevrolet Malibu LTZ2008 Chevrolet Malibu LT2008 Chevrolet Lumina SS2008 Chevrolet HHR SS2008 Chevrolet GPiX Concept2008 Chevrolet Equinox Sport2008 Chevrolet Corvette2008 Chevrolet Captiva Sport2008 Chevrolet Camaro LS7 Concept2008 Chevrolet Camaro GS Racecar Concept2008 Chevrolet Camaro Black Concept2008 Chevrolet Aveo2007 Chevrolet Volt Concept2007 Chevrolet Trax Concept2007 Chevrolet Tahoe2007 Chevrolet Suburban LTZ2007 Chevrolet Silverado Regular Cab2007 Chevrolet Silverado Extended Cab2007 Chevrolet Silverado Crew Cab2007 Chevrolet Silverado 3500 HD LTZ Crew Cab2007 Chevrolet Silverado 2500 HD LTZ Extended Cab2007 Chevrolet Jay Lenos Corvette C6RS E852007 Chevrolet HHR Panel2007 Chevrolet Groove Concept2007 Chevrolet Camaro Convertible Concept2007 Chevrolet Beat Concept2007 Chevrolet Avalanche LTZ2007 Chevrolet 34 Coupe E85 Concept2006 Chevrolet WTCC Ultra Concept2006 Chevrolet TrailBlazer SS2006 Chevrolet Silverado Z71 Extended Cab2006 Chevrolet Silverado Intimidator SS2006 Chevrolet Silverado Hydrogen Military Vehicle2006 Chevrolet Sequel Concept2006 Chevrolet Nubira Station Wagon WTCC R2006 Chevrolet Monte Carlo SS2006 Chevrolet Malibu SS2006 Chevrolet Malibu Maxx SS2006 Chevrolet Kodiak C45002006 Chevrolet Impala SS2006 Chevrolet Impala2006 Chevrolet HHR LT2006 Chevrolet Epica2006 Chevrolet Corvette Z06 Daytona 500 Pace Car2006 Chevrolet Corvette Z062006 Chevrolet Cobalt SS2006 Chevrolet Cobalt LT2006 Chevrolet Celta2006 Chevrolet Captiva2006 Chevrolet Camaro Concept2006 Chevrolet Aveo Sedan2005 Chevrolet West Coast Customs HHR2005 Chevrolet Uplander2005 Chevrolet Silverado Hybrid2005 Chevrolet Kodiak2005 Chevrolet Equinox2005 Chevrolet Corvette C6R Race Car2005 Chevrolet Corvette C62005 Chevrolet Corvette2005 Chevrolet Cobalt Sedan2005 Chevrolet Cobalt SS Supercharged Coupe2005 Chevrolet Cobalt SS2005 Chevrolet Cobalt2005 Chevrolet Cavalier Xtreme2005 Chevrolet Astra GSi 2.0 16V2005 Chevrolet Astra 2.0 Flexpower Elite2005 Chevrolet Astra 2.0 Flexpower Elegance2005 Chevrolet Astra 2.0 Flexpower Comfort2004 Chevrolet Tracker Turbo2004 Chevrolet Silverado2004 Chevrolet SOCAL SSR Bonneville Salt Flats2004 Chevrolet S3X Concept2004 Chevrolet Nomad Concept2004 Chevrolet Monte Carlo SS2004 Chevrolet Matiz M3X Concept2004 Chevrolet Malibu Maxx2004 Chevrolet Malibu2004 Chevrolet Lumina SS2004 Chevrolet Impala SS2004 Chevrolet Express2004 Chevrolet Electric S-10 Concept2004 Chevrolet Corvette Z06 Commemorative Edition2004 Chevrolet Colorado Regular Cab2004 Chevrolet Colorado LS Z71 Extended Cab2004 Chevrolet Colorado LS Z71 Crew Cab2004 Chevrolet Colorado LS Regular Cab2004 Chevrolet Colorado LS Extended Cab2004 Chevrolet Colorado LS Crew Cab2004 Chevrolet Colorado Extended Cab2004 Chevrolet Colorado Cruz2004 Chevrolet Cheyenne Concept2004 Chevrolet Aveo LS 5 Door2004 Chevrolet Aveo LS 4 Door
Note:
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