My 2004 Sebring 2.4L does not have an egr valve. The engine light is on light is on with and error of p0400 . So what now?

The fault is somewhere around the EGR valve - probably the EGR valve or the throttle position sensor.

Before replacing any sensors try removing and cleaning the EGR.

Here's a Youtube link that may be of help to you:

1999 maxima egr Google Search

This link explains about the EGR:
P0400 Exhaust Gas Recirculation Flow Malfunction

CEL code P0400 EGR Flow Malfunction

P0400- Exhaust Gas Recirculation Flow Error
Above is the code you ask about. It sounds like the EGR valve maybe plugged or not opening.
Sounds
Sos

P0400 Exhaust Gas Recirculation Flow Malfunction
P0235 Turbocharger Supercharger Boost Sensor Circuit Malfunction

I would say the EGR Valve is faulty- stuck open. I think the second code ( P0235) is being generated due to the EGR problem.

Hi Gerard, I'm glad to help. Gerald, I work on these everyday almost. The EGR Valve is located at the rear of the engine which would be near the brake fluid reservoir. It's way down low to the right under the exhause pipes very hard to see very hard to get to. When you replace it, get from the dealer and it will come with a new vacuum valve or at least it used to. You'll also need to clean the tube out because it will be full of carbon build-up and also make sure the hole in the cylinder head where it mounts is not blocked. Hope this helps and have an awesome day Gerald!

code p0400 refers to exhaust gas recirculation(EGR) system---flow malfunction.===causes---hose leak/blockage--basic setting not carried out (if applicable)---wiring---EGR valve ---EGR solenoid---ECM
check out the valve and solenoid.

P0400 - Exhaust Gas Recirculation Flow Malfunction
The exhaust gas recirculation (EGR) valve is vacuum controlled valve that regulates the amount of exhaust gases that re-enter the cylinders. The powertrain control module (PCM) determines how much based on engine load, temp, and other conditions. If the PCM detects that the amount of exhaust gases entering the cylinder were insufficient or non-existent, this code is set.

No symptoms will likely be noticed by the driver other than the MIL (malfunction indicator lamp). However, non visible symptoms will be increased combustion temperature and increased Nox emissions. A code P0400 may mean that one or more of the following has happened:
- Plugged EGR passage which restricts the flow of exhaust gasses
- Faulty EGR solenoid
- Faulty EGR solenoid wiring/harness
- Vacuum lines damaged/disconnected to the EGR valve solenoid or to the EGR valve
- Faulty EGR valve

Check it and keep us updated.

P0400 - Exhaust Gas Recirculation Flow Malfunction
The exhaust gas recirculation (EGR) valve is vacuum controlled valve that regulates the amount of exhaust gases that re-enter the cylinders. The powertrain control module (PCM) determines how much based on engine load, temp, and other conditions. If the PCM detects that the amount of exhaust gases entering the cylinder were insufficient or non-existent, this code is set.

Symptoms: No symptoms will likely be noticed by the driver other than the MIL (malfunction indicator lamp). However, non visible symptoms will be increased combustion temperature and increased Nox emissions.

Causes: A code P0400 may mean that one or more of the following has happened:
Plugged EGR passage which restricts the flow of exhaust gasses
Faulty EGR solenoid
Faulty EGR solenoid wiring/harness
Vacuum lines damaged/disconnected to the EGR valve solenoid or to the EGR valve
Faulty EGR valve

Possible Solutions: Since EGR valve designs are different, no one test will suffice:
Using a scan tool, operate the EGR valve with the engine running. If the engine stumbles, the problem was likely intermittent wiring problem or intermittent blockage problem
If engine doesn't stumble, operate the EGR valve manually, if possible. If engine doesn't stumble and die, the ports are likely plugged. Removal of valve and cleaning of all ports will be required
Checking of solenoid can only usually be done with a scan tool, because most solenoids operate with a duty cycle of voltage, rather than constant voltage
Check all vacuum lines, hoses, etc for any damage
Visually inspect the solenoid harness and the solenoid for damage
Replace EGR valve

Hope this helps.

A code P0400 may mean that one or more of the following has happened:
• Plugged EGR passage which restricts the flow of exhaust gasses
• Faulty EGR solenoid
• Faulty EGR solenoid wiring/harness
• Vacuum lines damaged/disconnected to the EGR valve solenoid or to the EGR valve
• Faulty EGR valve

After you have made the repairs go back to Advance Auto and have them remove this stored trouble code .Most places will remove them from your computer for free.

I have the 2005 Town & Country TOURING . If my memeory serves me correct, I believe this was the same code that I got on time. The van didn't seem to drive any different but this is what I did and I haven't seen the light come on since.
first I went to the dealer ( you can get these parts from a auto parts house also) and bought the 3 gaskets total.for the the EGR solenoid vavle assembly where it bolts on to the engine ( that gasket was made from metal), NOTICE AN INDENTATION IN THE METAL GASKET WHEN YOU TAKE IT OFF,YOU WILL WANT TO PLACE THE NEW GASKET IN THE SAME DIRECTION. one gasket that goes between the EGR valve solenoid and the small stand pipe. and another gasket that goes between the stand pipe and where it connects to the plastic valve intake area cover on top of the engine.
I took the EGR solenoid off from the engine and took it apart (reall carefully) and cleaned it thouroughly with a spray carbuerator cleaner. I took mine "completely apart" after I did this I dont recommend to do this again, you can damage the coil inside if you're not cafefully. I suggest just cleaning the valve and plunger ports, etc....
When it was completely dry I reinstalled the EGR solenoid on the van making sure I used ALL NEW GASKETS. The van hasn't produced the engine light since. I hope this helps.