# Code P1400 **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** nissan, altima\ **Created:** [November 13, 2013, 10:37am UTC](https://community.cartalk.com/t/code-p1400/82222 "2013-11-13T10:37:55Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![deepvai](https://avatars.discourse-cdn.com/v4/letter/d/b9bd4f/32.png) [@deepvai](https://community.cartalk.com/u/deepvai)\ **Post date:** [November 13, 2013, 10:37am UTC](https://community.cartalk.com/t/code-p1400/82222/1 "2013-11-13T10:37:55Z")
I got this code. I got the hose and pipe cleaned. Changed the EGR solenoid. The code was reset. I drove the car from Pennslyvania to Washington DC. Check engine light remained OFF. As soon as I got into stop & go traffic of DC the light came on. My mechanic checked it again reset the light then I drove the car for whole night from Pennsylvania to Atlanta - No light. The moment I got into atlanta city traffic POP came the light. My question is am I missing something. Does this info lead to specific part i need to change? Please help??? The car is 1999 Nissan Altima GXE ---
**Author:** ![BustedKnuckles](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bustedknuckles/32/25_2.png) [@BustedKnuckles](https://community.cartalk.com/u/BustedKnuckles)\ **Post date:** [November 13, 2013, 3:47pm UTC](https://community.cartalk.com/t/code-p1400/82222/2 "2013-11-13T15:47:17Z")
Did you clean the sensor feed pipes? If they are clean, you may have an EGR flow sensor going bad. ---
**Author:** ![deepvai](https://avatars.discourse-cdn.com/v4/letter/d/b9bd4f/32.png) [@deepvai](https://community.cartalk.com/u/deepvai)\ **Post date:** [November 13, 2013, 7:48pm UTC](https://community.cartalk.com/t/code-p1400/82222/3 "2013-11-13T19:48:34Z")
Thanks, My mechanic suggested intake manifold pipes. Are you saying the same thing? ---
**Author:** ![Cavell](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cavell/32/43396_2.png) [@Cavell](https://community.cartalk.com/u/Cavell)\ **Post date:** [November 13, 2013, 10:56pm UTC](https://community.cartalk.com/t/code-p1400/82222/4 "2013-11-13T22:56:19Z")
The egr is operated by a solenoid. The most common code is egr pintle “stuck”. You have a new egr. So the egr should be working fine. If the egr ports are plugged due to carbon, that will no affect on egr on/off operation and computer should be happy.