- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Code 404 is a problem with the performance of the EGR valve. Someone would need to test the operation of the valve and the sensor that watches it. You would need a shop manual for the procedure and basic tools.
So probably tighten gas cap or replace gas cap for code 456 then for code 404 clean carbon deposits from EGR valve or replace it then e mail me for a certain test that has to be done at firstname.lastname@example.org thanks
Error code will have to be cleared. The way that cars know when to turn on the check engine light is that there is a recurring error for "x" miles or time, as long as that error exists in it's memory most cars will continue displaying the check engine light.
Take the vehicle to your local auto parts store and have them read the check engine light code for you and then you can bring that back here and someone will be able to help you figure out what is going on. Just because you can't tell what it is right now doesn't mean that something isn't going bad very soon. Let us know. Thanks for using FixYa!
The code 404 doesn't mean anything unless you read the code book, but if its pertaining to the EGR Valve Position Sensor Low or High. This means the EGR Sensor is stuck and the EGR Valve will need to be replaced and the code cleared.