For Shop Owners
  AutoCodes
 
OBDII Code List
 
P229F CHEVROLET

P229F CHEVROLET - NOx Sensor Circuit Range/Performance Bank 2

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
Comments  |  Add Comment

Possible causes

  • Faulty Nitrogen Oxide (NOx) Sensor Bank 2
  • Nitrogen Oxide (NOx) Sensor Bank 2 harness is open or shorted
  • Nitrogen Oxide (NOx) Sensor Bank 2 circuit poor electrical connection
  • Possible symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
  • P229f Chevrolet Description

    The reductant system uses two Nitrogen Oxide (NOx) sensors to monitor the amount of NOx in the engine's exhaust gas. The first sensor is located at the outlet of the turbocharger and monitors the engine out NOx level. The second NOx sensor is located between the Selective Catalytic Reduction (SCR) and the Diesel Particulate Filter (DPF) and monitors NOx levels downstream of the SCR. The second NOx sensor also provides the Engine Control Module (ECM) with information on the exhaust oxygen level during DPF regeneration.

    Each NOx sensor contains a sensing cell, a pumping cell, and a heater. A sample of exhaust gas passes through a diffusion gap between the sensing cell and the pumping cell. The NOx sensor maintains a constant reference voltage across the sensing cell. An electronic circuit within sensor controls the pump current through the pumping cell in order to maintain a constant voltage in the sensing cell. The amount of current required to maintain the reference voltage in the sensing cell is proportional to the concentration of NOx in the exhaust.

    The ECM varies the amount of Diesel Exhaust Fluid (DEF) or reductant added by varying the reductant injector duty cycle in response to changes in engine exhaust out NOx levels. The smart NOx sensors consist of two components, the NOx module and the NOx sensor element that are serviced as a unit. A circuit or performance condition with a NOx sensor is detected by the NOx sensor module. The smart NOx sensor module communicates the condition to the ECM over the serial data line. The ECM sets a DTC when a serial data message is received from the NOx sensor module.

    OBDII Code P229f Chevrolet - NOx Sensor Circuit Range/Performance Bank 2 - Autoodes.com

    Need more help?

    Do you need more help with the P229f Chevrolet code? Ask a question to our users or find an automotive repair shop near you to help fix the OBDII code
  • Ask a Question
  • Find a Shop
  • Related Information

    P229F CHEVROLET Comments

    Help us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P229f Chevrolet code? Have you replaced any parts?
    Any information is appreciated. Thanks
    Top ⇧
    Repair Importance Level: 3
     
    1=Low 2=Medium 3=High  
    Repair Difficulty Level: 3
     
    1=Easy 2=Moderate 3=Hard  

    Browse All Codes For Specific Model Year

    Ford F150 1998 Ford F150
    1999 Ford F150
    2000 Ford F150
    2001 Ford F150
    2002 Ford F150
    2003 Ford F150
    Ford Fusion 2006 Ford Fusion
    2007 Ford Fusion
    2008 Ford Fusion
    2009 Ford Fusion
    2010 Ford Fusion
    2011 Ford Fusion
    2012 Ford Fusion
    Honda Accord 2008 Honda Accord
    2009 Honda Accord
    2010 Honda Accord
    Honda Civic 1996 Honda Civic
    1997 Honda Civic
    1998 Honda Civic
    1999 Honda Civic
    2000 Honda Civic
    Infiniti G35 2003 Infiniti G35
    2004 Infiniti G35
    2005 Infiniti G35
    2006 Infiniti G35
    Nissan Altima 2002 Nissan Altima
    2003 Nissan Altima
    2004 Nissan Altima
    2005 Nissan Altima
    2006 Nissan Altima
    2008 Nissan Altima
    2009 Nissan Altima
    2010 Nissan Altima
    2011 Nissan Altima
    2012 Nissan Altima
    Nissan Maxima 2005 Nissan Maxima
    2006 Nissan Maxima
    2007 Nissan Maxima
    2008 Nissan Maxima
    Nissan Pathfinder 2005 Nissan Pathfinder
    2006 Nissan Pathfinder
    2007 Nissan Pathfinder
    2008 Nissan Pathfinder
    2009 Nissan Pathfinder
    2010 Nissan Pathfinder
    2011 Nissan Pathfinder
    2012 Nissan Pathfinder
    Nissan Rogue 2008 Nissan Rogue
    2009 Nissan Rogue
    2010 Nissan Rogue
    2011 Nissan Rogue
    2012 Nissan Rogue
    2013 Nissan Rogue
    Nissan Sentra 2002 Nissan Sentra
    2003 Nissan Sentra
    2004 Nissan Sentra
    2005 Nissan Sentra
    2006 Nissan Sentra
    2007 Nissan Sentra
    2008 Nissan Sentra
    2009 Nissan Sentra
    2010 Nissan Sentra
    2011 Nissan Sentra
    2012 Nissan Sentra
    Toyota Camry 1997 Toyota Camry
    1998 Toyota Camry
    1999 Toyota Camry
    2000 Toyota Camry
    2001 Toyota Camry
    2006 Toyota Camry
    2007 Toyota Camry
    2008 Toyota Camry
    2009 Toyota Camry
    2010 Toyota Camry
    2011 Toyota Camry
    Toyota Corolla 2005 Toyota Corolla
    Toyota Echo 2000 Toyota Echo
    2001 Toyota Echo
    2002 Toyota Echo
    Toyota Highlander 2001 Toyota Highlander
    2002 Toyota Highlander
    2003 Toyota Highlander
    2004 Toyota Highlander
    2005 Toyota Highlander
    2006 Toyota Highlander
    2007 Toyota Highlander
    Toyota Prius 2004 Toyota Prius
    2005 Toyota Prius
    2006 Toyota Prius
    2007 Toyota Prius
    2008 Toyota Prius
    2009 Toyota Prius
    Scion xB 2005 Scion xB
    2006 Scion xB
    2007 Scion xB