Shop Owners

P2097 - Post Catalyst Fuel Trim System Too Rich Bank 1

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?
Share Share on Facebook Share on Twitter Share on Linkedin Share on Google Plus Print Version PDF Print
P2097 Comments |  Add Comment
Possible causes
- Exhaust leak near O2 sensor
- Faulty O2 sensor
- Fuel contamination
What does this mean? What does this mean?
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P2097 Description

The Heated Oxygen Sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content of the exhaust stream. When the engine is started, the engine control module (ECM) operates in an open loop mode, ignoring the HO2S signal voltage while calculating the air to fuel ratio. The ECM supplies the HO2S with a reference, or bias voltage of about 450 mV. While the engine runs, the HO2S heats up and begins to generate a voltage within a range of 0-1 000 mV. This voltage will fluctuate above and below the bias voltage. Once sufficient HO2S voltage fluctuation is observed by the ECM, closed loop is entered. The ECM uses the HO2S voltage to determine the air to fuel ratio. An HO2S voltage that increases above bias voltage toward 1 000 mV indicates a rich fuel mixture. An HO2S voltage that decreases below bias voltage toward 0 mV indicates a lean fuel mixture.

P2097 Information for specific makes
P2097 BUICK Post Catalyst Fuel Trim System Too Rich Bank 1
P2097 CADILLAC Post Catalyst Fuel Trim System Too Rich Bank 1
P2097 CHEVROLET Post Catalyst Fuel Trim System Too Rich Bank 1
P2097 CHRYSLER Downstream Fuel Trim System 1 Rich
P2097 DODGE Downstream Fuel Trim System 1 Rich
P2097 FORD Post Catalyst Fuel Trim System Too Rich Bank 1
P2097 GMC Post Catalyst Fuel Trim System Too Rich Bank 1
P2097 HYUNDAI Post Fuel Trim Too Rich-B1
P2097 INFINITI Post Catalytic Fuel Trim System Too Rich Bank 1
P2097 JEEP Downstream Fuel Trim System 1 Rich
P2097 LINCOLN Post Catalyst Fuel Trim System Too Rich Bank 1
P2097 MERCURY Post Catalyst Fuel Trim System Too Rich Bank 1
P2097 NISSAN Post Catalytic Fuel Trim System Too Rich Bank 1
P2097 SUBARU Post Catalyst Fuel Trim System Too Rich Bank 1
Related Questions
- Subaru Baja Turbo -Can The Oil Control Valve Be Related To Burnt Valves?

Hello I have a 2006 Subaru Baja Turbo.  Needed a valve job at 89k.  Dealership could ...

- P2097 HYUNDAI - Post Fuel Trim Too Rich-B1. What Does It Mean?
My car is 2004 Hyundai Accent with A/T and 64K miles. It's in good shape and gets good mileage (30-3...
- Is It Possible That Any Of These Problems Would Not Affects Gas Mileage?
Suggested possible causes all make sense, however, if nothing affects the gas maileage, is it possib...
- What Is The Repair For Fault Code P2097 On A VW Jetta
I have a 2005 VW Jetta. I'm told that my car has a OBD code P2097 "Post Catalyst Fuel Trim System B...
- Solution For P2097 Code Dodge Caravan 2005
Need more help?
Do you need more help with the P2097 code? ask a question to our users or find an automotive repair shop near you to help you with yout repair
Help us improve 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 P2097 code? Have you replaced any parts?
Any information is appreciated. Thanks Comments Powered by Disqus
Repair Importance Level: 3
1=Low 2=Medium 3=High What does this mean?
Repair Difficulty Level: 3
1=Easy 2=Moderate 3=Hard What does this mean?
Browse All Codes For Specific Model YearBeta
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
Home - For Shop Owners - About - Privacy Policy - Terms and Conditions -
Copyright 2010-2016