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Code reader reads p0400, p0401 - 2004 Dodge Stratus

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Your egr valve is failing replace it.these are all egr codes

Posted on Feb 06, 2010

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Posted on Jan 02, 2017

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I have a p0400diagnostic code egr. what dose this mean I've just bought the manual but I cant find it ford focus 06


P0400 - Exhaust Gas Recirculation (EGR) Flow Description: The electric EGR (EEGR) system is monitored once per drive cycle during steady state conditions above 77 km/h (48 mph). The test fails when a concern is detected by powertrain control module (PCM) calculations indicating the EGR flow is less or greater than expected. Possible Causes:
  • EEGR valve stuck open or closed
  • Connector to EEGR not seated
  • EEGR motor winding circuits short or open
  • No voltage to the EEGR
  • Harness open or shorted to voltage or ground
  • Vacuum signal to manifold absolute pressure (MAP) restricted or leaking
  • Mass air flow (MAF) sensor signal erroneous
  • Carbon build up in the EEGR valve seat area
  • One or more sensors is not responding or is out of range
Diagnostic Aids: All of the following sensors input data to the PCM for correct operation of the EEGR system: engine coolant temperature (ECT), crankshaft position (CKP), intake air temperature (IAT), MAF, throttle position (TP), MAP. Any DTC relating to these sensors must be resolved prior to addressing code P0400. Application Key On Engine Off Key On Engine Running Continuous Memory All GO to Pinpoint Test KD . Wells Ford EGR DPFE Training with Sgt Tech P0400 P0401 P0402

Feb 12, 2017 | Ford Cars & Trucks

1 Answer

How do you clear a blocked exhaust when code says insuffient emisions


egr valve bad,P0401 OBD-II Trouble Code Technical Description Insufficient EGR Flow What does that mean? EGR stands for Exhaust Gas Recirculation. It is part of the vehicle emmissions system, and is used to reduce combustion temperature and pressure to control Oxides of Nitrogen. There are generally three parts to the EGR system: the EGR valve, an actuator solenoid, and a differential pressure sensor EGR (DPFE). These things work together to deliver the correct amount of recirculation based on engine temperature, load, etc. The P0401 code means that OBD detected an insufficient amount of EGR. Symptoms You may notice drivability problems such as pinging (a.k.a. pre-ignition knock) when the engine is under load or the vehicle is at higher speeds. There may also be other symptoms. Causes A code P0401 most likely means one or more of the following has happened: The DPFE (differential pressure feedback EGR) sensor is faulty and needs to be replaced There is a blockage in the EGR (tube), most likely carbon buildup The EGR valve is faulty The EGR valve may not be opening due to a lack of vaccuum Possible Solutions In fixing this code, it is quite common for people to just replace the EGR valve only to have the OBD code return. The EGR valve is not always the culprit. Use a vacuum pump and pull the EGR valve open while monitoring engine RPM's & DPFE voltage. There should be a noticable difference in RPM's with the EGR open Clean out the EGR valve and/or tubing to remove deposits Check the voltage at the DPFE, compare to specified values (refer to a repair manual for your specific model) Replace the DPFE sensor (with a good quality / OEM one) Replace the EGR valve Related EGR codes: P0400, P0402, P0403, P0404, P0405, P0406, P0407, P0408, P0409

Read more at: http://www.obd-codes.com/p0401
Copyright © OBD-Codes.com

May 31, 2015 | Cars & Trucks

1 Answer

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?


With the code coming up for an EGR valve I would consider it unlikely that it left the factory without one as it would have had the code from day one and it would have been fixed at a service under warranty.. If you got the car second hand then it is possible that the EGR valve failed and the previous owner found it easier to blank it off to sell it . I would consider fitting a new valve and getting it working properly as it is critical to passing the road worthy certificate., performance and economy.

May 03, 2014 | 2004 Chrysler Sebring Sedan

1 Answer

Code P0401 came up 3x


read this.
http://www.obd-codes.com/p0401

Mar 18, 2014 | 2006 Pontiac Montana SV6

1 Answer

Skipping upon accelaration 1399,1456 and 401 codes showed up


oh yes i know its you EGR valve (Exhaust Gas Recalculation)

A code P0401 most likely means one or more of the following has happened: The DPFE (differential pressure feedback EGR) sensor is faulty and needs to be replaced There is a blockage in the EGR (tube), most likely carbon buildup The EGR valve is faulty The EGR valve may not be opening due to a lack of vaccuum Possible Solutions In fixing this code, it is quite common for people to just replace the EGR valve only to have the OBD code return. The EGR valve is not always the culprit. Use a vacuum pump and pull the EGR valve open while monitoring engine RPM's & DPFE voltage. There should be a noticable difference in RPM's with the EGR open Clean out the EGR valve and/or tubing to remove deposits Check the voltage at the DPFE, compare to specified values (refer to a repair manual for your specific model) Replace the DPFE sensor (with a good quality / OEM one) Replace the EGR valve Related EGR Articles: P0400 - P0402 - P0403 - EGR System Explained

Read more at: http://www.obd-codes.com/p0401
Copyright OBD-Codes.com

Oct 02, 2013 | Cars & Trucks

2 Answers

Fault code p0401


This error means Exhaust Gas Recirculation Flow Insufficient Detected.

You can deatils on the following site http://www.permoveo.ltd.uk/tabid/122/OBD-Error-Code/P0401/Diagnostics/Hyundai/Default.aspx

but for convenience I have reproduced that information here:
.
Generic OBD Error Code Details for P0401 Exhaust Gas Recirculation Flow Insufficient Detected What does this mean? OBD Code P0401refers to
EGR stands for Exhaust Gas Recirculation. It is part of the vehicle emmissions system, and is used to reduce combustion temperature and pressure to control Oxides of Nitrogen. There are generally three parts to the EGR system: the EGR valve, an actuator solenoid, and a differential pressure sensor EGR (DPFE). These things work together to deliver the correct amount of recirculation based on engine temperature, load, etc. The P0401 code means that OBD detected an insufficient amount of EGR. SymptomsPossible sumptoms of OBD code P0401
You may notice drivability problems such as pinging (a.k.a. pre-ignition knock) when the engine is under load or the vehicle is at higher speeds. There may also be other symptoms. CausesPossible causes of OBD code P0401
A code P0401 most likely means one or more of the following has happened: •The DPFE (differential pressure feedback EGR) sensor is faulty and needs to be replaced•There is a blockage in the EGR (tube), most likely carbon buildup •The EGR valve is faulty •The EGR valve may not be opening due to a lack of vaccuum Possible SolutionsIn fixing this code, it is quite common for people to just replace the EGR valve only to have the OBD code return. The EGR valve is not always the culprit. •Use a vacuum pump and pull the EGR valve open while monitoring engine RPM's & DPFE voltage. There should be a noticable difference in RPM's with the EGR open •Clean out the EGR valve and/or tubing to remove deposits•Check the voltage at the DPFE, compare to specified values (refer to a repair manual for your specific model)•Replace the DPFE sensor (with a good quality / OEM one)•Replace the EGR valve Related CodesP0400 P0402 P0403

Jul 12, 2011 | Hyundai Tucson Cars & Trucks

1 Answer

95 Blazer code P0401


Have a little read of this link, it may help you.

http://www.obd-codes.com/p0401

Jun 19, 2009 | 1995 Chevrolet Blazer

2 Answers

MERCURY 2000 ODB2 CODES P0400, P00A0, P0401


P00A0 is a factory readable only code (i.e. only ford dealers have the computer to read it)
the P0400 is a generic E.G.R. flow restriction code. so yes a dvom (multimeter) and a vacuum pump to diagnose it correctly, also check for loose wires as ford harness connectors are known to fail alot due to crappy phenolic content in the plastic and heat combined they can warp and / or corrode the contacts

Sep 19, 2008 | 2000 Mercury Sable

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