What do these OBD 2 code mean, P0705 and P0403?

P0403....Exhaust Gas Recirculation Control Circuit


P0705....Transmission Range Sensor Circuit Malfunction (PRNDL Input)





Would this cost alot to get fixed? What do they mean...





And I want to know if my having trouble starting up my car at the gas pump has anything to do with these two. And its only at the pump after putting gas in it... I usually have to rev up the engine to keep it going then drive off. THEN ITS FINE, no issues after that.|||Exhaust gas recirculation is known as EGR and it recycles some of the exhaust gases back into the intake to be mixed in with the air/fuel mixture to be re-burnt which lowers emissions. They are electronic valves that are opened by the ECM/ECU by either an electromagnet solenoid or by a vacuum control valve. The most likely cause is just carbon built up inside the EGR passage. Occasionally, a piece of this carbon can break off and get lodged under the valve, holding it open causing a lean condition. If you get gas at a location just off a highway, I would say, yes, the EGR is most likely the problem. The reason for this diagnoses is because the EGR only operates at highway speeds and as you slow down to pull in for gas, you really don't notice a problem because the vehicle is decelerating. You shot off the vehicle, pump gas, and go to restart it, but this chunk of carbon is causing the engine to lean misfire. When you rev the engine it can sometimes vibrate the chunk loose and the valve closes.


As for the trans. range sensor malfunction it could be the cold weather or a shift indicator sensor is bad. This is the vehicle shift indicator which tells you if the vehicle is in Park, Reverse, Neutral, Drive, or Low. Check to make sure the shift indicator light is working. If I remember right, a burnt indicator bulb could cause that code to be set.


Hope this helps and good luck. Christopher

96 saturn sl1 EGR Valve...?

i have been told that a bad EGR valve (exhaust gas recirculation valve) could cause a car to buck or hesitate in mid range speed at low rpms, thats what my car is doing. i work at autozone and i used our code reader and there was a code that stated "EGR flow malfunction" anyone else have this problem ever? please help me! i dont wanna spend the $120 if i dont need to!|||There is a device called the transducer that connects to the EGR system via vac lines that doe's have a electronic plug on it that could show up under codes as if the EGR valve is faulty but isn't.If the EGR valve has a electronic plug on it then it could be that it's faulty.





Hope that helps and best of luck.By the way I ran into that same problem and it was the transducer.Keep in mind that at the big do it yourself auto wreckers you should be able to find several of either of those parts.|||No problem my friend.

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|||Since you work at auto-zone why don't you get yourself a Haynes repair manual. I would say the egr is probably bad but the book will show you how to test the egr to make sure it's bad. It also has a lot of good trouble shooting information.|||If an egr valve opens too soon you will have a hesitation problem. Bad egr's do not cause problems with drive-ability at cruising speed. It sounds like your egr is faulty. |||i had one go bad on my 95 saturn, it sometimes ran rough at a steady speed and stalled at stoplights

2000 mitsubishi eclipse EGR replacement.?

I have a Mitsubishi Eclipse and I want to replace the exhaust gas recirculation valve. My problem lies in that I bought a new valve from auto zone that has two extra tubes coming out of the side. I checked and it is supposed to fit my car (2000 Mitsubishi Eclipse GS) its just the one in my car at the moment does not have these tubes so I do not know what to do about them.|||take the one off your car and take the new one back and exchange for one that matches your vehicle.

Code P0401 vehicle: ford Taurus 3.0 liter flex fuel?

its my baby. i was driving it the other day the light came on (service engine soon). i went to checker got it checked out. this came up. please let me know what it could be? and what the solutions are please its my baby. thank you fellow yahoo peeps "P0401 EXHAUST GAS RECIRCULATION FLOW INSUFFICIENT DETECTED" that was the message|||egr valve is not working or egr ports are pluged with carbon you would need to bring it to a shop for further diag.|||check to make sure egr valve is operating properly

1995 Ford Ranger???

I have a tester for the check enginbe light and it say 'exhaust gas recirculation flow insufeccient. What does that mean??|||If when you replace the egr make sure you clean the hole where the EGR goes get all the smut out that you can use a vacuum cleaner to suck out the deb-ere, Second you might have a bad DPFE, it works with the EGR clean all hoses surrounding EGR. hope this helps,|||This is known as an EGR problem in the gearhead world. MOst likely you will need a new EGR valve. Ive worked at autozone and i just checked their database. youre lookin at about 50-100 bucks. depending on your engine type.|||EGR valve


PVC valve





both common problems for the Ranger|||your DPFE SENSOR is probly bad , does it sound like a exhaust leak under the hood , it is a small sensor with two hoses on it . it plugs and blows the exhaust hose of , it is about $75

Any Mechanics Out There?

I asked this question before, but I didn't have all the details at the time. I took my 2001 Ford Focus for the emission test today and it failed. Here is the report I received: P0401 - Exhaust Gas Recirculation Flow Insufficient Detected.





Secondary Air System (not supported)


Heated Catalyst (not supported)


-- Engine light was on for the past several months.





Q: Would anyone have any idea how much this will cost me?





thank you again!!|||Dont listen to EITHER of those hackers who posted before me.TAKE IT TO THE DEALER.You egr valve apears to be functioning improperly.Hovere by simply replacing this EGR valve your not gauranteed to fix it...you need to go to the dealer.what they will then do is test the valve with a vacuum pump.by aplying vacuum they can see if the valve is able to aply.if the engine stalls at idle when the valve is under vacuum the valve is good and the problem lies elsewhere.DONT EVER REPLACE PARTS BECAUSE THE CODE SAYS THATS WHAT IT IS!!!THE COMPUTER DOESNT KNOW THE DIFFERENCE BETWEEN THE PART ITSELF AND THE CAUSE.ITS ONLY AN IDEA!!|||your EGR valve is not working. the not supported means it does not apply to your car. the only fault is the EGR valve issue and that would definitely cause a check engine light. take it to Autozone and they can run the codes and show you were the EGR valve is located so you can replace it. good luck|||possible oxygen sensor is faulty, replacement maybe 1-2 hundred dollars australian. take car to a mechanic and get a free quote.|||sounds like egr problems. which take exhaust gases and recirculates it through the engine. the "code would most likely be a P0401. and autozone will tell you they cant do anything. not certain on price.

Code P0401 vehicle: ford Taurus 3.0 liter flex fuel?

its my baby. i was driving it the other day the light came on (service engine soon). i went to checker got it checked out. this came up. please let me know what it could be? and what the solutions are please its my baby. thank you fellow yahoo peeps "P0401 EXHAUST GAS RECIRCULATION FLOW INSUFFICIENT DETECTED" that was the message|||you need a new egr valve most likely have the person who checked it erase the code and see if it comes back the same code my truck had the same code I erased the code and its hasn't came back since