What kind of fuel does a DTC P0420 use?
What kind of fuel does a DTC P0420 use?
DTC P0420 is a type B DTC. DTC P0420 is a type B DTC. The use of Off Road Red Dye Fuel or continuing use of non ultra low sulfur fuel may be a possible contributor to this DOC failure.
Why does DTC fail on a Duramax Diesel?
The engine control module (ECM) monitors the exhaust gas temperature (EGT) sensor 1 to determine if the operating temperature of the catalyst is achieved during a regeneration event. When the ECM detects that the DOC is not reaching a pre-determined temperature during an active regeneration event this DTC fails.
How often does DTC P0420 run during regeneration event?
DTC P0420 runs once during an active regeneration event. The ECM determines that the DOC functionality has degraded below a calibrated threshold, during a regeneration event. The condition exists for greater than 4.5 minutes. DTC P0420 is a type B DTC. DTC P0420 is a type B DTC.
What does the Doc do on a Duramax Diesel?
Diagnostic Procedure Instructions provide an overview of each diagnostic category. The diesel oxidation catalyst (DOC), main function is to control emissions of Non Methane Hydro Carbons (NMHC)and soluble organic fraction (SOF).
What does the service code P0420 mean?
P0420 is a trouble code that gets stored in your car engine’s control unit when it recognizes a problem with the catalytic converter’s efficiency . There are many different reasons for this, so you need to know how to diagnose this trouble code properly.
What does this code mean P0420?
P0420 is a diagnostic trouble code (DTC) for “Catalyst System Efficiency Below Threshold (Bank 1)”. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation.
What does the engine error code P0420 mean?
A P0420 Code means that the engine control unit recognizes that the catalytic converter’s efficiency is below the threshold. The ECM uses two O2 sensors, one in the front and one in the back of the catalytic converter, to measure the efficiency. If the efficiency is low, the P0420 code will be triggered. In most cases, a P0420 code is caused by a bad catalytic converter .
What is code reader code P0420 mean?
What the P0420 code means: A P0420 code indicates a problem with the catalytic converter. The purpose of the catalytic converter is to break down harmful pollutants created during the combustion cycle.
