Question about 2000 Chrysler Sebring

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Where does the EGR Transducer vacuum line connect to near the firewall?

Recieved code P0401. Visual inspection of EGR and Transducer revealed broken vacuum line in two places. Unable to trace vacuum line to intake (near firewall). Would like a picture or detailed location as well as size of vacuum hose for replacement. No diagram in engine compartment.

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Hi. Thanks for your question. For clarification on EGR transducer vacuum line connection you can visit and download the entire workshop manual which includes all the information along with the diagrams for better understanding. Good day!

Posted on Mar 23, 2018


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Posted on Jan 02, 2017



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SOURCE: Code P0420

P0420 Catalyst System Efficiency Below Threshold (Bank 1)

There is one 02 sensor in front of the catalytic converter (called upstream), and one behind it (downstream). When the engine is warmed up and running normally the upstream oxygen sensor reading fluctuates and the downstream one is fairly steady. In the case where both readings are fairly steady, a P0420 check engine light code is set.

Possible Causes:
Oxygen (O2) sensor not working correctly
Damaged or leaking exhuast (pipe, manifold, catalytic converter)
Damaged catalytic converter

Posted on Mar 24, 2009


  • 1 Answer

SOURCE: Code P0406

Where is the egr valve on my crystler 300?

Posted on Aug 17, 2009



  • 775 Answers

SOURCE: '96 LHS P0401 error code

Posted on May 29, 2010


Ricky Peters

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SOURCE: I changed the EGR valve on my '02 PT Cruiser

Its either a faulty EGR valve or it has carbon build up inside.Take valve off and clean carbon out using a non-chrlonated brake cleaner and wire brush.

Posted on Apr 21, 2011

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00 Camry 2.2 egr problem po 401 low flow new egr valve new solenoid new transducer new map clean passages. I don't know what else to do

Here is an overview for the code as it relates to Toyota cars.
I would go back and make sure the tubes and pipes are clear.
In most cases, the passage is plugged up, or the sensor does not "see" the flow.

Possible causes
- EGR passage clogged
- Faulty EGR Vacuum Modulator Valve
- Faulty EGR Valve
- Faulty EGR solenoid valve
- EGR solenoid valve harness is open or shorted
- EGR solenoid valve circuit poor electrical connection
- Dead (Weak) battery
- Faulty EGR temperature sensor and circuit
- Exhaust gas leaks

Read more:

Sep 05, 2014 | Cars & Trucks

1 Answer

P0401 comes ,so I cleaned the egr valve and the svs, but after a not too lon drive the chek engine came back. I put the scanner and it shwos the same code again. What could be happenig whit tha egr or...

Cleaning is not the problem it mean its not sufficient yor problem reside in either the back pressure tranducer or the solenoid has failed more than anything you will highly need a backpressure transducer cansmo_142.gifcansmo_143.gifwhere the EGR is rev the engine do you have vacuum if you do then you need a backpressure transducer if you dont go to the VSV is there vacuum on either line check this on line attached at a time. while reving the engine

Aug 28, 2011 | 1997 Toyota RAV4

1 Answer

Code is p0401 even after replacing the EGR valve. Insufficient EGR flow. is there somethiong else to change?

Not sure as to what model Crysler/dodge you have but in a lot of the chrysler vehicles there is what is called a EGR solenoid/transducer. The EGR valve and solenoid/transducer need to be replaced at the same time because they are calibrated together. Check to see if this is the case with your vehicle. If you want, feel free to email me at with your information on your model, year and engine size and i will be happy to look it up for you. Now I can't say that this is completly the situation in your case but if it does have the other unit it does need to be replaced and this will also cause this code as well. Check all your vacuum lines as well. I hope this helps and good luck.

Jun 21, 2011 | Dodge Ram 1500 Cars & Trucks

2 Answers

I have a 2001 Ford Taurus the check engine light is on the code I got is p0401. What does that mean

insufficient egr flow usually the dpfe sensor located in the back of intake manifold or mounted
on firewall.if you follow the wires/vacuum line from the egr valve you'll see it. common problem
& fairly easy job pick up a new 1 so you no what it looks like

good luck

Jun 19, 2011 | 2001 Ford Taurus

1 Answer


P0401 indicates that the Exhaust Gas Recirculation Flow Insufficient Detected. This can be because EGR is faulty . As you have replaced this then the problem must be with the vacuum line . EGR valve vacuum line which can be broken or blocked. The vacumn ine must bbe checked for leaks or any blocks using an vacumn pump connected the line.

P0420 indicates that the down stream oxygen sensor reading is not steady and it is connected with the code P0401.

Jan 05, 2011 | 2001 Toyota Camry

1 Answer

My 1999 Mercury Sable failed inspection test with three codes 1)PO125 2)P1507 3)P0401

When I run search for p01252 and p15073 I got no hits codes do not exist. The p0401 is a good code and comely found it is for the EGR system (exhaust gas recycle) to do proper test all you need is a vacuum pump and volt meter. A scan tool would make it a lot easyer but most people don't have one. Do a visual check. The most common item is the DPFEGR sensor which should be replaced with the hoses.
The test to pinpoint the problem requier specal test equiment. Double check on the other 2 codes.

Nov 24, 2010 | 1999 Mercury Sable

2 Answers

Have 2 codes, both are p0401 but the 2nd code has a pd after it

The "pd" after the code means that the code is pending. Meaning that the ECM recognized a problem but is identifying it is inactive. You can gather that the problem is intermittent.
P0401 means: Exhaust gas recirculation flow insufficient. This code has something to do with the EGR system. The EGR valve may be defective of something else within the system is restricted or is clogged and thinks that there is a restriction. Without a scan-tool you will be limited to what you can do or test but you can remove the EGR valve and inspect it for carbon buildup. But you may also want to inspect the vacuum lines and MAP sensor too. Faults in those areas can affect the performance of the EGR system. So be thorough.

May 03, 2010 | 1999 Acura CL

3 Answers

Check engine light on 401

Should be the same as the Contour. Try these items, let me know.

go to a web site for contours, i got alot of info on
the old P0401 trouble code over there.. will cover your taurus as well
as the contours..... one is to clean the manifold by pulling off the
throttle valve body and pulling all the carbon deposits out of the
openings.. i had the P0401 on my 96 contur and changed out the EGR, the
EGR vacuum modulator and still have the problem code and will get to the
cleaning behind the throttle body when i get a chance to get to it....
been like this for about 2 yrs. now... no problems running the car, just
the light stays on... i can get it to go out by disconnecting the
battery but it comes back after two cycles in the car start up.....

Feb 24, 2010 | 2001 Ford Taurus

1 Answer

How do you replace the egr valve in a 1997 chrysler concorde lx

Chrysler Concorde 1993-1997 3.5L MFI 6cyl
Exhaust Gas Recirculation System

This system reduces the amount of oxides of nitrogen (NO x ) in the exhaust by allowing a predetermined amount of exhaust gases to recirculate and dilute the incoming fuel/air mixture. The diluted air/fuel mixture reduces peak flame temperature during combustion, which in turn inhibits the production of Nitrogen oxides. The principal components of the system are:
- EGR tube (connects a passage in the intake manifold to the exhaust manifold)
- EGR valve
- Electronic EGR Transducer
- Vacuum hoses

Component and System Testing
  1. Check the condition of all of the EGR system hoses and tubes for leaks, hardening or kinks on the rubber hoses. Repair and correct these conditions before proceeding any testing.
  2. Be sure that the hoses at both of the EGR valve and EGR valve control are connected to the proper fittings.
  3. Be sure the electrical connector is firmly attached at the valve control.
  4. To check the EGR system operation, connect the DRB III scan tool or equivalent to the 16-way data link connector. The data link connector is located on the lower edge of the instrument panel near the steering column. Follow the scan tool instructions.
  5. After checking the system with the DRB III scan tool, proceed to the EGR valve leak and control tests, then repair as necessary.

Removal & Installation
EGR Valve and Transducer


EGR valve and transducer assembly-3.5 engine


The EGR valve attaches to the back of the cylinder head-3.5L engine


Loosen, but do not remove, the EGR tube to intake manifold screws

The EGR valve attaches to the rear of the right cylinder head.
  1. Remove the vacuum tube from the electric EGR transducer solenoid. Inspect the vacuum lines for cracking, poor seal due to hardness, or other problems. Replace with new hoses if necessary.
  2. Remove the electrical connector from the solenoid.
  3. Slide the transducer up and out of the mounting bracket.
  4. Loosen, but do not remove, the EGR tube to the intake manifold screws.
  5. Remove the EGR tube lower screws at the valve.
  6. Remove the EGR valve and transducer.
  7. Clean both gasket surfaces and check for any signs of leakage or cracks. Replace the components if any such damage is found or if the valve fails the tests.

To install:
  1. Loosely install the EGR valve and a new gasket onto the cylinder head.
  2. Using a new gasket, attach the EGR tube to the valve and tighten the screws to 95 inch lbs. (11 Nm).
  3. Tighten the EGR tube to the intake manifold plenum screws to 16 ft. lbs. (22 Nm).
  4. Tighten the EGR valve to the cylinder head screws to 16 ft. lbs. (22 Nm).
  5. Reconnect the transducer solenoid to the vacuum fitting on the manifold.
  6. Slide the transducer into the bracket.
  7. Reconnect the vacuum lines and electrical wires to the EGR transducer.

Sep 04, 2009 | 1997 Chrysler Concorde

1 Answer

To start out i get a P0401 code and a P0442 code so i changed out the egr pressure sensor and the egr valve and also the egr solenoid, then erased the codes and 2 days later they popped up again??????

This may not help, but it's worth a shot. On my Nissan, I had this same problem. The issue turned out to be the BackPressure Transducer (BPT), which is just a tube that runs from the exhaust manifold up to the EGR solenoid, to provide vacuum for the EGR to operate. That tube was plugged up with carbon, so no vacuum was getting to the EGR. Like you, everything else checked out -- the EGR and the EGR sensors were all fine. Once I cleared the blockage, the code never returned!

Aug 30, 2009 | 1999 Ford Explorer

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