...DTC code P0420 (bank 1) will this correct itself after changing the EGR valve or do I have to change the O2 sensor? Thanks, Paul The 420 will not go away with egr replacement. it means the computer ...
...DTC P0420: 1/1 CATALYTIC CONVERTER EFFICIENCY NOTE:For component location, see COMPONENT LOCATIONS . For connector identification, see CONNECTOR IDENTIFICATION . For circuit identification and wiring ...
...P0420 Is related to a faulty rear 02sensor. P1518 PCM & TAC module communication detected missing or invalid serial data. If TAC related repair has been done, clear DTC & recheck system. It ...
...DTC P0420 or P0430 Diagnostic Instructions * Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. See: Testing and Inspection\Initial Inspection and Diagnostic ...
O2 Sensor and if so how do I know if its before or after the cat converter? DTC P0420: Catalytic System Efficiency Below Threshold You will have to replace the catalytic converter nearest the firewall
whats wrong with my truck P0420 P0420 P0420 dtc indicates catalytic convertor below threshold bank 1. You will need to h ave your convertor s checked and replaced
DTC p0420 how to fix and how much P0420 How To Diagnose Bad Catalytic Converter EricTheCarGuy
...P0420. • DTC P0171 Fuel Trim System Lean Bank 1 • DTC P0174 Fuel Trim System Lean Bank 2 . The engine control module (ECM) controls the air/fuel metering system in order to provide the best possible ...
...P0420 DTC persists after new Cat install Code persists after new Cat install Did you reset the code? Try some of this to clean the fouling in the rest of the system, Dura Lube Severe Catalytic & ...
Question about 2006 STS
...DTC P0420: Catalyst System Low Efficiency Bank 1 DTC P0430: Catalyst System Low Efficiency Bank 2 bank 1 means , that bank that contains cylinder #1 where is cylinder #1 it on all V engines, that ...
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