MVA emmision test diagnostic fixes?

i own a infiniti i30


i took it to the emmision and i got the response bellow:


*p0400 exhaust gas recirculation A flow


*p0325 knock sensor 1 circuit bank 1 or single sesor





i was talkin to a mechanic and they were talking about 400$ of repairs..





i need advice onwaht to do? or where i can buy the parts from to get it installed cheaper..|||The Exhaust Gas Recirculation (EGR) valve may have carbon buildup which can be cleaned out without replacing the expensive EGR valve. The adjacent intake manifold EGR passageways need to be cleaned of excessive carbon buildup when the EGR valve is removed. That may correct the engine knock, so do that first.

2001 mustang v6 3.8 shows code 401 with OBD11 reader have put out lite but keeps coming back on faulty sensor?

This only started happening after car had been parked for three weeks the generic code po 401 says exhaust gas recirculation flow insufficient detected. mustang v6 with a 3.8 I am using a digital obd11 reader|||some of the things u need to check when this code comes up is ur EGR vavle, EGR sensor, vaccum lines, and PCM and any lines off the EGR system|||Sounds like the DPFE sensor. If the EGR ports are not clogged, then it is probably the sensor. They are known to fail.|||DPFE sensor known ford problem. well not a " Ford" problem but with the part manufacturer. .. all models of ford have the recall or the TSB on this concern. Call your local ford store with your vehicles VIN number and ask the serv dept to run an OASIS on your car to see if its under the TSB or the recall.

Check engine light P0401?

I have 99 Camry i get a check engine light, I Diagnoised in Autozone with "P0401-"EGR System fault (Exhaust Gas recirculation). What is this means?|||Could need to repair the vacuum hoses to have proper vacuum to actuate the EGR valve.|||The EGR valve or one of the components are bad start with EGR and go from there You also have a PDFE censer that is possible cone bad Follow the little hoses going to EGR and you will find it , hope this helps|||p0401 exhaust gas recirculation flow insufficient, it means that there is a blockage in the plumming for the egr.it can pass enough exhaust through the valve. the fun part is finding the restriction. it could be in the eqhuast manefold itself, the pipe between the manefold and the egr, or between the egr and the intake manefold. at the same time toyota does( or at least did) something strange to the egr system. there is a valve in the system that basicly shuts odd the egr, if there is too little or no presure in the exhaust. you may check into this idea. of course the vehicle that i was informed of this idea on was also a nightmare for toyota, a 3 barrel carburator that was just having so many problems marketwide.

Hello My emmissions light is on.?

My emmissions light is on. The car is an VW Golf 1.6 from 2001.


I have Diagnostic test running and it came up with the following:


Fault code P1553 eight sensor / induction manifold pressure sesor invalid ratio


P1403 exhaust - gas recirculation system control diference





Can anyone help?





Thanks|||E.G.R valve clogged with soot and dirt. they can be removed and cleaned with Carb cleaner. ( Exhaust gas recirculation valve). once dirty they can stick open or closed.



Also check any electrical connections are good and any vacuum hose connections for splits or cracks.



The valve takes some of the spent gasses from the exhaust and feeds them back to the inlet ports, this reduces emissions by reducing the engine operating temperature.

Diagnostic code on Huyandai XG 350?

Reads insufficient exhaust gas recirculation. What does this mean and how do I correct it.What happens if i dont.|||it means what it says. it's part of your vehicles emissions.


your EGR valve could be faulty or is not opening up. a carbon buildup can also cause this and can be fixed by cleaning the valve or the tube.


a lack of vacuum can cause the valve not to open up properly.


you can test the voltage on the differential pressure feedback EGR sensor. you may need to replace that as well.


not sure what can happen over long term if not fixed.


there's also an actuator solenoid in the system.

My daughter's 2005 1700D Lupo has recently been illuminating the starter plug light well after the temp ......?

......has been reached . The only code showing is P0489. Could someone point me in the right direction, to save time? On looking it up it appears to be: Exhaust Gas Recirculation Control Circuit Low


Thanks.|||Vw fault code: P0489





Possible causes are air leaks in Egr vacuum lines ,faulty lambda sensor or low or high fuel pressure.








Sorry i cant help much but with out seeing the vehicle it is difficult in diagnosing this kind of fault.

CodeKey Dodge Neon 98 Car Trouble?

Standard DTCs (ISO 15031-6/SAE J2012): Exhaust Gas Recirculation Flow Insufficient Detected


I used CodeKey on my 98 Dodge Neon and got this result, I have no idea what this means. Can someone explain to me what this is?|||egr valve is pluged with carbon,get a can of sea foam from the parts store ,take off a vac line large one run the motor about 2000-3000 rpms,put sea foam in hose real slow,to fast will stall out the motor.replace the hose, then let the car set turned off for 1 hour,then take the car out and drive is hard 15 mins .check the rear view see the black carbon come out...|||This is a common code on these vehicles. Most likely suspect is a faulty EGR valve. Also known as a Exhaust gas recirculation valve. Basically, this component allows exhaust gasses to be routed through the engine to burn it again, resulting in cleaner emissions. First thing to do would be to remove the valve, usually held in place with 2 13 mm bolts/nuts, and check and see if its feed port where it mounts, is blocked with carbon. If it is, you can take a small ice pick or screw driver and chisel it out and blow it clean and re install EGR valve and reset the code and see if it comes back. If there is not any carbon that you can see, then you most likely have a faulty EGR valve. The replacement typically runs around $85 at a parts store. Its an easy to replace part. I hope this helps!|||Something wrong with the egr valve or circuit. The valve is located on the end of the cylinder head nearest the transmission. Look at the hoses that control it first to see if they are broken. A new one is about $70.