Technical articles on Catalytic Converter maintenance, diagnostics and failure prevention.
Records 1 to 5 of 5
High NOx Readings and What Are the Causes!
date posted: 07-08-2010
We sometimes get calls from customers who have been told they need a new converter because their vehicle has tested showing VERY HIGH NOx readings. A catalytic converter WILLNOT by itself reduce HIGH NOx emissions. If you are having high NOx readings with your vehicle please read the article below...might just answer your questions why?
The Vehicle Emission Control Label is located under the hood of your car and will help you identify the type of emissions that your vehicle came equipped with from the factory.
A DIAGNOSTIC MANUAL FOR TROUBLESHOOTING THE OBDII CATALYTIC CONVERTER
Following is a complete Diagnostic Manual in helping you diagnose and troubleshoot problems with a vehicles emission system and the possible replacement of emission parts including the catalytic converter.
WHAT IT MEANS WHEN YOUR GET A CODE READ OF PO420 OR PO430
It is important to remember that if your "Check Engine Light" illuminates and someone just simply reads a code of PO420, 421, 430 or 431 this does not necessarily mean the Catalytic Converter is bad! All that code says is either Converter operating below efficency or Converter operating below threshold. No where in the interpretation of that code does it say the converter is bad. Your vehicle may very well need a Catalytic Converter but to determine this, your mechanic or technician should perform proper engine diagnostics. Just reading a simple code is NOT considered performing diagnostics. The following material should give you a better understanding of what proper diagnostics consist of and how they should be performed. If after reading this material you still have questions please give us a call, 888-651-0770, and we will do all we can to help you solve the problem.
OBDII (On Board Diagnostics Second Generation) systems are required by Federal law on all passenger cars and light trucks manufactured since 1996. It is a computer on board the vehicle that monitors the engine and emission control equipment to verify that all systems are working properly. If the monitor detects a fault, a code is stored in the computer, and the malfunction indicator lamp (MIL) is illuminated.
