Description
OBD-II Trouble Code Description for P0421 Renault
Warm Up Catalyst Efficiency Below Threshold
What does this mean?
OBD2 Code P0421 Renault definition:
Basically this means that the oxygen sensor downstream of the catalytic converter on bank 1 is detecting that the converter is not working as efficiently as it should be (according to specs). It is part of the vehicle emissions system.
Symptoms
Possible sumptoms of OBD code P0421 Renault
You will likely not notice any drivability problems, although there may be symptoms. The code may be more likely to occur after the engine has had numerous cold starts in the past 1-2 days.
Causes
Possible causes of OBD code P0421 Renault
A code P0421 Renault may mean that one or more of the following has happened: The catalytic converter is no longer functioning properly An oxygen sensor is not reading (functioning) properly A sparkplug is fouled up
Possible Solutions
Measure the voltage at the oxygen sensor on Bank 1 (the rear sensor, or the sensor after the converter). In fact, it would be a good idea to test each oxygen O2 sensor while you’re at it. One thing to note is that many vehicle manufacturers offer a longer warranty on emissions-related parts. So if you have a newer car but it’s out of it’s bumper-to-bumper warranty, there still may be warranty on this type of problem. Many manufacturers give a five year, unlimited mileage warranty on these items. It’s worth checking into.
The OBD2 Code Information Be Applicable For Renault:
2013 Renault ZOE,2013 Renault Twin-Z Concept,2013 Renault Twin-Run Concept,2013 Renault Talisman,2013 Renault Symbol,2013 Renault Scenic XMOD,2013 Renault Fluence,2013 Renault Espace,2013 Renault Clio,2012 Renault Twingo,2011 Renault Megane,2011 Renault Latitude,2011 Renault Laguna Estate,2011 Renault Laguna,2011 Renault Frendzy Concept,2011 Renault Captur Concept,2010 Renault Scenic,2010 Renault Megane RS,2010 Renault Megane Estate,2010 Renault Grand Scenic,2010 Renault Fluence,2010 Renault DeZir Concept,2010 Renault Clio RS,2009 Renault Twingo RS,2009 Renault Symbol,2009 Renault Scenic,2009 Renault Safrane,2009 Renault Megane,2009 Renault Laguna GT,2009 Renault Laguna Coupe,2009 Renault Koleos,2009 Renault Kangoo,2009 Renault Clio Campus,2009 Renault Clio,2008 Renault ZE Concept,2008 Renault Twingo,2008 Renault Sandero,2008 Renault Laguna Estate,2008 Renault Laguna,2008 Renault Kangoo,2007 Renault Megane,2006 Renault Twingo,2006 Renault Thalia,2006 Renault Nepta Concept,2006 Renault Kangoo,2006 Renault Espace,2006 Renault Clio Sport,2006 Renault Clio RS Concept,2006 Renault Altica Concept,2005 Renault Z17 Concept,2005 Renault Vel Satis,2005 Renault Modus Initiale,2005 Renault Laguna,2005 Renault Clio III,2004 Renault Modus,2004 Renault Megane,2004 Renault Clio,2003 Renault Scenic II,2003 Renault Be Bop
Note:
1. The list of automotive Makes at the right edge of the screen. The currently selected ODB-ii codes is for the Renault makes.
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