What to do if your EGR valve is blocked?
When the EGR valve is blocked, error codes of P1404 and P1406 may display on the engine light area. Remove the plug and clean it using the valve cleaning kit to remove blockages.
How much does it cost to replace the EGR valve on a Honda Accord?
You will need; wire brush, some carb cleaner or brake cleaner, a shop vac, new EGR gasket $1-$2 and new EGR chamber gasket $32.00 from Honda. Remove the fuel rail with the injectors intact if possible. (Do it slow and gentle) Unbolt the EGR valve. Unbolt the EGR chamber underneath the fuel, that is bolted on to the intake manifold.
How does an EGR valve work on a diesel engine?
When you slowly and efficiently come to a stop, the valve also closes and stops the flow of exhaust gases. The process continues so long as the engine is operating. Once you shut off the engine, the valve also closes and stays in that position. Diesel and gasoline-powered engines can use an array of EGR valve configurations.
What causes a failure code on an EGR system?
Another common problem causing failure codes in this system is that the tip of the valve will become irregular shaped from carbon deposits. When this happens it no longer creates a perfect seal. This can allow exhaust gas to continue to flow when not called for by the computer. An example would be at engine idle or when the vehicle is cold.
What’s the diagnostic code for the EGR valve?
Several technical service bulletins for a wide variety of different makes and models have documented different problems associated with the EGR valve system. With some exhaust gas issues you might set a diagnostic trouble code of PO401 or P0402.
What causes the EGR valve to stick closed?
1) Excess oil getting into the intake from the PCV system, or other causes of oil consumption. 2) Poor fuel that does not have good cleaners. 3) Unusual driving habits, especially short trips. 4) The EGR valve is sticking closed, but this should set a different code.
Are there any problems with the Honda EGR system?
But has anyone else experienced repeat problems with the EGR system within such a short timeframe? If this is the V6 Accord, it very well could be an issue with carbon buildup again. It seems there was a tech bulletin which was issued by Honda about it for the 98-01 Accord and 99-02 Odyssey.
You will need; wire brush, some carb cleaner or brake cleaner, a shop vac, new EGR gasket $1-$2 and new EGR chamber gasket $32.00 from Honda. Remove the fuel rail with the injectors intact if possible. (Do it slow and gentle) Unbolt the EGR valve. Unbolt the EGR chamber underneath the fuel, that is bolted on to the intake manifold.