What the P0401 code means. P0401 is an OBD-II generic code that the engine control module (ECM) detected the engine exhaust gas recirculation (EGR) valve is not flowing enough recirculated exhaust gases when it is commanded to open the flow of gases into the intake manifold.What the P0401 code means. P0401 is an OBD-II generic code that the
What is the most common cause of a P0401 EGR code?
P0401 can be caused by anything from a clogged EGR valve to a faulty EGR temperature sensor to an engine vacuum leak.
How do you fix EGR insufficient flow?
Remove and clean any carbon buildup to the EGR Valve. Remove and clean any carbon buildup to the EGR temperature sensor. Removing carbon buildup/ partial blockages out of EGR tubes to the intake manifold. Replace defective EGR temperature sensor.
Can I drive with a P0401 code?
Hi There, Code P0401 relates to the EGR valve flow. When this code is triggered, the computer has detected that the flow is insufficient. Driving the car until next week will not cause any harm, although the vehicle may not run well.
What causes EGR insufficient flow code?
Faulty EGR valve. A failed sensor (e.g., differential pressure sensor, manifold absolute pressure sensor, etc.) Inadequate vacuum supply to the EGR valve. Circuit problems, such as damaged wiring and loose connections.
How do I fix code P0401?
Zitat von Youtube: First carefully remove the egr valve from your car. Turn the egr valve upside down and fill it up with the wd-40. Cleaner let it soak for five hours for the solvent to get rid of all the carbon.
Is P0401 serious?
P0401 engine code is rather serious and should be repaired as soon as possible. A faulty EGR valve can cause ignition pre-ignition in the engine, potentially damaging the valves and pistons.
Where is the EGR sensor located?
Mechanical EGR valve position sensors are mounted on the top of the EGR valve. EGR pressure sensors will be located close to the EGR valve as the exhaust gas hose must be connected to the sensor as well as the valve.
Should I clean or replace EGR valve?
An average car’s EGR valve has a lifespan of approximately 10 years in service. Proper maintenance of the valve is a must if you want to avoid any performance related issues on your car. If you notice a smell of fuel that comes out from under the hood or rough idling, then it might be time to replace the valve.
Where do you spray EGR cleaner?
Spray the product for 2 seconds into the air intake manifold but DO NOT SPRAY DIRECTLY INTO THE INTERCOOLER. After each spray, wait until the idle rpm is restored and engine runs stable. Repeat the process until all of the product has been discharged from the aerosol.
How much does it cost to replace a exhaust gas recirculation?
The average cost of replacing the EGR valve in your vehicle is anywhere from $250 to $350 on average, depending on your vehicle’s year, make, and model as well as the type of system it has. The cost of parts will be somewhere around $190 to $270, while the cost of labor will be anywhere from $60 to $80.