# P0401 code coming on my car **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** engines, accord, honda\ **Created:** [September 18, 2020, 6:23am UTC](https://community.cartalk.com/t/p0401-code-coming-on-my-car/170102 "2020-09-18T06:23:34Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![Josh3939](https://avatars.discourse-cdn.com/v4/letter/j/a87d85/32.png) [@Josh3939](https://community.cartalk.com/u/Josh3939)\ **Post date:** [September 18, 2020, 6:23am UTC](https://community.cartalk.com/t/p0401-code-coming-on-my-car/170102/1 "2020-09-18T06:23:34Z")
Hi i have a 2002 honda accord v6. I been getting code p0401 on my car. I clean out the upper intake out and got all the carbon stuff out. And I replace the egr vavle two times on the car. But I was driven it yesterday and my check engine light and tcs light came back on again. It seems too me when ever my check engine light comes on the tcs comes on but if you turn the car off its goes away for a little bit but as you drive the car it comes back on. But i scan the car and the code p0401 comes up again. What else could be the problem. ---
**Author:** ![oldnotdeadyet](https://avatars.discourse-cdn.com/v4/letter/o/a6a055/32.png) [@oldnotdeadyet](https://community.cartalk.com/u/oldnotdeadyet)\ **Post date:** [September 18, 2020, 1:45pm UTC](https://community.cartalk.com/t/p0401-code-coming-on-my-car/170102/2 "2020-09-18T13:45:01Z")
Truthfully, your shorthand and lack of punctuation is so distracting that I can’t begin to think about your problem. Maybe I am just living up to my username. ---
**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\ **Post date:** [September 18, 2020, 1:48pm UTC](https://community.cartalk.com/t/p0401-code-coming-on-my-car/170102/3 "2020-09-18T13:48:40Z")
> [@Josh3939](#): > > i need help its driven me crazy And your post without sentence structure will drive people crazy . They will just move on to other help requests . ---
**Author:** ![Renegade](https://avatars.discourse-cdn.com/v4/letter/r/b4bc9f/32.png) [@Renegade](https://community.cartalk.com/u/Renegade)\ **Post date:** [September 18, 2020, 2:44pm UTC](https://community.cartalk.com/t/p0401-code-coming-on-my-car/170102/4 "2020-09-18T14:44:34Z")
Agree with the other’s you need to write in (american english) ---
**Author:** ![cdaquila](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cdaquila/32/18089_2.png) [@cdaquila](https://community.cartalk.com/u/cdaquila)\ **Post date:** [September 18, 2020, 3:59pm UTC](https://community.cartalk.com/t/p0401-code-coming-on-my-car/170102/5 "2020-09-18T15:59:58Z")
Edit: see josh’s rewrite below. Does anyone have any ideas for him? ---
**Author:** ![Josh3939](https://avatars.discourse-cdn.com/v4/letter/j/a87d85/32.png) [@Josh3939](https://community.cartalk.com/u/Josh3939)\ **Post date:** [September 18, 2020, 4:01pm UTC](https://community.cartalk.com/t/p0401-code-coming-on-my-car/170102/6 "2020-09-18T16:01:13Z")
Ok sorry about it I retype whats going on ---
**Author:** ![Josh3939](https://avatars.discourse-cdn.com/v4/letter/j/a87d85/32.png) [@Josh3939](https://community.cartalk.com/u/Josh3939)\ **Post date:** [September 18, 2020, 4:08pm UTC](https://community.cartalk.com/t/p0401-code-coming-on-my-car/170102/7 "2020-09-18T16:08:22Z")
Hi when the engine light comes on the tcs light comes on the same time. But if you shut the car off the tcs light goes off intill you drive the car a little bit. But the check engine light stays on. Intill it gets clear off. I did everything I got told too do. I got 2 new egr valves and clean the intake out. ---
**Author:** ![wentwest](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/wentwest/32/6073_2.png) [@wentwest](https://community.cartalk.com/u/wentwest)\ **Post date:** [September 18, 2020, 5:30pm UTC](https://community.cartalk.com/t/p0401-code-coming-on-my-car/170102/8 "2020-09-18T17:30:51Z")
It’s quite possible the passages are not completely cleaned out. There are a couple of YouTube videos about it to watch. Also you can google for a Honda Accord forum and search there for P0401 code solutions. ---
**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\ **Post date:** [September 18, 2020, 5:38pm UTC](https://community.cartalk.com/t/p0401-code-coming-on-my-car/170102/9 "2020-09-18T17:38:31Z")
You really jumped the gun on this one, in my opinion That code didn’t tell you “Replacing the EGR valve will take care of the code” The code is a starting poing Did you verify proper power and ground, as far as the EGR valve is concerned? Is the egr valve even getting a signal to do its thing What about the egr passages . . . I’m assuming there’s some kind of an egr pipe on this car ---
**Author:** ![Josh3939](https://avatars.discourse-cdn.com/v4/letter/j/a87d85/32.png) [@Josh3939](https://community.cartalk.com/u/Josh3939)\ **Post date:** [September 19, 2020, 5:15pm UTC](https://community.cartalk.com/t/p0401-code-coming-on-my-car/170102/10 "2020-09-19T17:15:53Z")
I clean all the intake on top. I clean the hole on the engine part too. I clean the Hoses. I checked the hoses too. And today the code came back up ---
**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\ **Post date:** [September 19, 2020, 6:29pm UTC](https://community.cartalk.com/t/p0401-code-coming-on-my-car/170102/11 "2020-09-19T18:29:02Z")
I believe P0401 is an “isufficient egr flow” code Are you sure the egr valve is actually activating? And you didn’t answer my question about power and ground . . . ---
**Author:** ![Josh3939](https://avatars.discourse-cdn.com/v4/letter/j/a87d85/32.png) [@Josh3939](https://community.cartalk.com/u/Josh3939)\ **Post date:** [September 20, 2020, 8:05am UTC](https://community.cartalk.com/t/p0401-code-coming-on-my-car/170102/12 "2020-09-20T08:05:57Z")
How can I test it too see if i am getting power too it?