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P0401 exhaust gas recirculation flow insufficient detected 2002 pontiac montana

P0401 p0404 p0405 detected

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: 2002 Pontiac Montana Thermostat replacement

check the coolant level fiirst...if that is low it wont give you any heat.....to change the thermostat you have to follow the top radiator hose to the engine.at the send of it you will see a clamp take it loose...then you will see the thermostat housing its held in place by 2 bolts . once you remove them you have the thermostat....make sure you clean all the old gasket material off both the housing and mount.also make sure you get a new gasket.

Posted on Jan 29, 2009

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Molson02536
  • 3854 Answers

SOURCE: 1998 PONTIAC SUNFIRE ADVISE

Exhaust Gas Recirculation System Is the main problem here. the other code P0118 may be a bad temprature sensor or your thermostate needs to be changed. Last it could be a weak water pump. 

So what is an EGR system and how does it work? EGR stands for Exhaust Gas Recirculation, and as its name implies, this system allows exhaust gasses from your car to be re-circulated into the engine, helping to reduce emissions. These systems are mostly comprised of the EGR valve, a DPFE (Delta Pressure Feedback EGR) sensor, hoses, a vacuum regulator, some vacuum lines, wiring, the computer and the exhaust tube leading to the valve itself. 
The car's wiring can be tested in the normal fashion by looking for broken and lose wire, and all vacuum lines can be checked easily for cracks, leaks and correct routing.
The last thing i would then check is the the EGR valve, EGR vacuum regulator and DPFE sensor (or similar flow sensor).
I hope this helps and good luck

Posted on Apr 09, 2009

  • 105 Answers

SOURCE: 2002 Pontiac Montana, No Heat, I put the temp control on

the cabel from the heat dial to the heater box behind the dash could be snaped or jamed thus not opperating the lever which operates the flap which open and closes the heat box next to the matrix. or if your coolant is brown in colour it could be your matrix is clogged with sedament and needs flushing out. or it could be your water pump not pumping coolant round your engine or it could be a knackerd thermostat i hope these will help you id start with the easyest first thermostat

Posted on Dec 17, 2009

riceski
  • 1851 Answers

SOURCE: gas gauge

Remove the dash and remove the gas gauge pod - look for burnt circuits as this is the easiest part of the equation. Unless you hit something with the gas tank [ if you did - there will be a large dent in the tank] the problem mathematically lies in the gauge/wiring and not the tank/gauge.
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Posted on Apr 04, 2010

  • 2 Answers

SOURCE: 2002 pontiac montana passanger pwr window

I beleive you need to change the Power Window Switches Module in the drivers side door panel, as these connections are interlinked within this module and it is usually the first part that fails. Especially that you already changed the switches & motor in the passenger door and it still does not work. Once you remove the dual switch module in the driver's side door, you will understand what I mean. Plus it is really easy to access. Good luck! I have the same model, Claude

Posted on Jun 16, 2010

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1 Answer

What do OBDII Codes P0401 and P0404 indicate in a 2001 Chevy Impala?


P0401 usually means for most vehicles
Exhaust Gas Recirculation Flow Insufficient Detected

P0404 usually means for most vehicles
Exhaust Gas Recirculation Circuit Range/Performance


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What do the OBDII trouble codes P0401 & P0404 mean with 2001 Chevy Impala?


P0401 Exhaust Gas Recirculation Flow Insufficient Detected

P0404 Exhaust Gas Recirculation Circuit Range/Performance

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Trouble code P0401


code p0401 refers to exhaust gas recirculation(EGR) system-insufficient flow detected--- Causes ---hose leak/blockage, basic setting not carried out( if applicable)wiring--EGR valve/solenoid---ECM I would check the EGR valve solenoid first. Replace the faulty units with genuine one because most aftermarket units are not set for OEM cpu units and are not completely
compatible.

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P0401 is showing I have a 2005 ford explorer what do I need to change out


P0401 Exhaust Gas Recirculation Flow Insufficient Detected
Remove the EGR valve and clean up passage ways using spray on carburetor/fuel injector cleaner.

Oct 08, 2010 | 2004 Ford Explorer

1 Answer

I use seafoam though vaccume hose after that i read code p0401 what that means


P0401: Exhaust gas recirculation (EGR) system - insufficient flow detected


Causes: Hose leak/blockage, basic setting not carried out (if applicable), wiring, EGR valve, EGR solenoid, ECM

better clean out hoses and valves...

Oct 04, 2010 | 2002 Honda Accord

1 Answer

I have 4 codes: 1- p0401 2- p0401 Pd 3- p0403 4- p0405 what do I have to do to get rid of these codes. what are these and where are they located on a 2004 grand am Thx


p0401
Exhaust gas recirculation-insufficient flow detected
p0403
Exhaust gas recirculation-circuit malfunction
p0405
Exhaust gas recirculation vave position sensor A- circuit low

hope this helps. not sure where they are located

Aug 27, 2010 | 2004 Pontiac Grand Am

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2002 FORD RANGER 6CYL. 4.0L I GOT A P1400 TROUBLE


Exhaust gas recirculation flow insufficient detected.
Maybe you got a bad DPFE sensor, or the pintel inside the egr valve is not opening all the way causing the insufficient flow.

May 14, 2010 | 2002 Ford Ranger Regular Cab

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1998 Chevy Truck 1/2 ton 350 engine. Trouble codes P0404, P0405 and P1404. I replaced the EGR valve. Now I get t/c P0404 and P0405. Now what should I check?


404 is exhaust gas recirculation circuit, and 405 is exhaust gas recirculation sensor circuit low. EGR sensor or ground?

Nov 13, 2009 | 1999 Chevrolet Silverado 1500

1 Answer

Disgnostic code meaning


P0404 Exhaust Gas Recirculation Control Circuit Range/Performance
P0405 Exhaust Gas Recirculation Sensor “A” Circuit Low


It sounds like you have a failure of the EGR valve.

Sep 28, 2008 | 2000 Chevrolet Tahoe

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