Tech Tips
O2 Sensor Diagnostics
Complete Diagnostic Procedures for Oxygen Sensors
CHEVROLET TRUCKS TSB GM PIP3119N
CHEVROLET TRUCKS TSB GM PIP3119N
GM 1.4L TURBO CONVERTER EFFICIENCY PO420 CODE ISSUES
THIS IS A REPAIR PROCEDURE FOR THE 1.4L GM TURBO VEHICLES WITH A CHRONIC PO420 CONVERTER EFFICIENCY CODE
PLEASE CHECK THESE FOLLOWING ITEMS BEFORE INSTALLING A NEW CONVERTER…IF ANY OF THESE CONDITIONS EXIST JUST INSTALLING A NEW CONVERTER WILL NOT SOLVE THE PROBLEM
CLICK HERE FOR STEP BY STEP INSTRUCTIONS ON HOW TO ISOLATE PROBLEM
Technical Service Bulletin Honda Civic Hybrid
SOURCE: Honda Service News
TITLE: Replace the Correct Three-Way Catalytic Converter for DTC P0420, P1420, or P2000
APPLIES TO: 2003-05 Civic Hybrids (ULEV and SULEV models)
EXPLAINING TROUBLE CODES PO420 – PO421- PO430 – PO431
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. Nowhere 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 the material below 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 SOLUTIONS
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.
VEHICLE EMISSIONS CONTROL LABEL
The Vehicle Emission Control Label is located under the hood of your car and will help you identify the type of emissions platform that your vehicle came equipped with from the factory. These labels may be one of these locations:
High NOx Readings and Causes!