The main purpose of the EGR system is to reduce the amount of the nitrogen oxides (NOx) in the exhaust emission. Also, determined this Autoxray 4000 scanner will not even pick up the P040* codes set when I disconnect the EGR valve (testing only of course). HomeTroubleshootingTroubleshooting BasicsRepair ManualsOBD CodesOBD II CodesCar Won't StartAsk a MechanicSimple RepairsTypes of RepairsSpark PlugCar BatteryAlternatorBrakesTiresHeadlightsReplacement PartsRepair ToolsMajor RepairsHead GasketRadiatorAir ConAir BagsRepair CostsRepair ScamsAuto Repair ShopsMaintenanceMaintenance BasicsOil ChangeAir FilterFuel FilterCoolant FlushCar WashingBetter A lot of times the computer flags this P0401 code because the intake ports intake either the throttle body or intake manifold are plugged up. To see if this is the this contact form
There are different ways to monitor the EGR flow. Fortunately for me my service writer owns a 6.0 PSD and is pretty sharp. Laden... EGR stands for "exhaust gas recirculation". internet
You can do this with carb cleaner. Auto Repair Auto Repair Product Reviews - Reviews of Products to Repair, Detail and Accessorize Your Car or Truck - Funny Stuff Too Safety First! The percentage vlue should be 0% when EGR is commanded off (at idle), 100% when EGR is commanded on (typically when cruising under light load), and between 0% and 100% is STATUS AND READINESS MONITORS OBD II requires the following status and readiness monitors: Fuel System 1 Status Fuel System 2 Status Secondary Air Status Auxiliary Input Status Misfire Monitor Status Fuel
Push the wiring safely out of the way then proceed to the dirty part. Tks again, Mark Share Share this post on Digg Del.icio.us Technorati Twitter 2004 White F350 XLT, CC, SB, 4x4, 6.0L Auto, 3.73LS, Camper Pkg, Skid Pkg, Edge 2" Mini Spring Pack, WeergavewachtrijWachtrijWeergavewachtrijWachtrij Alles verwijderenOntkoppelen Laden... What Is Egr Error Percentage Please confine discussion of topics in this forum to those items that are specific to the 6.0L Power Stroke engine.
I am unfamiliar with the scanner you mention. Egr Valve Error Code If you still need help regarding the P0401 trouble code, please post your question in our FREE car repair forums. The code again was P0401. It probably isn't. [img]/ubbthreads/images/graemlins/smirk.gif[/img] They aren't a reliable diagnostic tool.
For example, gasoline, stoichiometric is 14.64:1 ratio. Exhaust Gas Recirculation Error Code You might notice the engine knocking or 'pinging' noise (detonation) or there could be no symptoms at all. I have always run with it plugged in. You would think a trouble code would showup.
Warm-ups Since DTCs Cleared -- Number of warm-up cycles since all DTCs were cleared with a scan tool. http://www.samarins.com/diagnose/p0401.html robinsonsauto 51.422 weergaven 28:12 EGR Exhaust Gas Recirculation - Duur: 2:08. Egr Error Code P0404 I am curious about one thing though, my P1000 never clears. Egr Valve Error Code P0406 Please enter a valid email address.
Regular Maintenance Quick Tips! weblink I have the 6000 and you have the 4000 AutoXray tool; yet my Auto Enginuity and your 4000 are indicating 99.2% EGR Error. What is its purpose?2 answersJanuary 10, 2011Related ItemsEGR system clean.egr valve replacement/cleaningwhere is the egr vavleegr valve blows a hole makes load noise and slows car down to about 40 miles Share NOTE: This information is presented for information purposes only. Egr Fault Codes
What Causes the P0401 Code? With stock air cleaner, about 1.3 lbs at idle. It's easy to check the electrically-operated EGR valve for restriction with a scan tool: when the EGR valve is commanded open on a scan tool with the engine idling, the engine navigate here If commanding the EGR valve open has no effect on the engine idle, the EGR system is plugged up or the EGR valve is inoperative or stuck closed.
Taal: Nederlands Contentlocatie: Nederland Beperkte modus: Uit Geschiedenis Help Laden... P0401 Code Toyota Camry See some photos at this post and here. - Another Honda bulletin describes the problem with hesitation or stumble under light acceleration between 1,500-2,000 rpm in the 1990-1993 Accord and 1997-2001 The EGR passages need to be checked for carbon buildup and restrictions.
What is to be replace or fixed?... Remember to let your engine cool thoroughly before doing any service like this. on 3/25/06; the 06 w/ 45K on 10/1/07; the 08 F350 DRW CC Fx4 w/67K mi on 2/15/12) bnmccoy is offline Quote Quick Reply post #4 of 20 (permalink) Old P0401 Code Honda Accord If it is back to normal, the purse valve is leaking.
The accepted EGR static test is to measure the EGR position voltage at 0% (this is a KOEO test, BTW)and then command the valve to at least 99% duty cycle. Upon shutdown, both read 0.0%. Email Address: OR Log-in User Name Password Remember Me? his comment is here How does your computer know how much exhaust gas is being burned if any? Different manufactures do it differently. Some manufactures use the oxygen sensor to monitor the oxygen (air fuel)
Additionally, the EGR should not be commanded using your scan tool while driving.... Like cycle EGR, etc...? Fuel Rail Pressure -- Indicates the fuel rail pressure at the engine referenced to atmosphere (gauge pressure). There are different ways to monitor the EGR flow.
The ECM in an OBD II compliant vehicle constantly monitors and periodically tests the EGR system along with other emission control systems. Not all vehicles are equipped with an EGR system; many newer cars utilize a variable valve timing and other means to control the NOx emissions. The electrical part needs to be checked too. Positive LTFT numbers indicate the PCM is adding more fuel to compensate for a lean fuel condition.
About.com About Autos Auto Repair Reference and Technical Data for Auto Repair Diagnosing the Great EGR Error Code This the EGR system that can cause the P0401 DTC code to pop Sometimes the DPFE sensor hoses could be reversed during a repair and this also could cause the code P0401. About Today About Autos Auto Repair You might also enjoy: Living Healthy Health Tip of the Day Sign up There was an error. EGR systems are used to reduce the combustion temperature, thus reducing NOx formation.