What is the EGR system on a Honda Civic?
There are three main parts of the Civic’s EGR system. They are the EGR Valve, Differential Pressure Sensor, and the Actuator Solenoid. P0401 is a general code, which means that regardless of the year (1996+ anyway) and the model, it’ll have the same meaning regardless of which manufacturer built the vehicle (Honda Civic or not).
What happens if you block the EGR valve?
Well, if you’ve ever played with a syringe, you know that if you pull back on the plunger that it’s very easy to do. However, if you block off the end and try to pull on the plunger, it’s much harder to pull back.
What causes a blocked EGR on an Acura MDX?
Blocked EGR Tube – The tube that carries the exhaust gases back to the motor may clog up over time. Alternatively, it can become bent or kinked. This is especially true if you are experiencing P0401 right after doing some engine work. Check the tube and see if it is cracked, clogged or otherwise damaged.
What does p0401 stand for in Honda Civic?
P0401 is a common OBDII trouble code that’ll pop up in the Honda Civic. It has to do with the emissions system and stands for:
There are three main parts of the Civic’s EGR system. They are the EGR Valve, Differential Pressure Sensor, and the Actuator Solenoid. P0401 is a general code, which means that regardless of the year (1996+ anyway) and the model, it’ll have the same meaning regardless of which manufacturer built the vehicle (Honda Civic or not).
What happens when you block off the EGR valve?
The exhaust produced by the combustion process contains carbon dioxide, which is partly water. The carbon dioxide, along with burnt exhaust gases, enters through the EGR valve into the intake to reduce harmful NOx (nitrogen oxide) emissions, but it also cools the combustion chamber.
Can a car pass a smog test with a faulty EGR valve?
The EGR valve is an important emissions component, especially for vehicles in states with strict emissions regulations. You won’t be able to pass a smog test with a faulty EGR valve.
What does EGR stand for in a car?
EGR, which stands for Exhaust Gas Recirculation, comes equipped on most new vehicles, as well as some older models. The EGR valve recirculates burned exhaust emissions back into the intake system so the emissions can be re-burned, or “recycled,” out the exhaust.