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Change egr but engine light has come on - 2004 Renault Megane

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Have the codes pulled up. It may be another emissions component that is bad.

Posted on Apr 22, 2014

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Egr valve was change and the check engine light keep coming on p0404


could be carbon buildup or a bad EGR valve. Did you disconnect the battery to let the computer learn the new part? However that doesn't rule out these an open or short in the 5 Volt reference circuit Open or short in the ground circuit Open or short circuit in the PCM controlled voltage circuit or a bad pcm or you got a defective egr valve

Jun 04, 2014 | 2004 Chrysler Pacifica

1 Answer

Egr insufficient flow


NO YEAR, STATED.
NO ENGINE STATED.
now that makes this hard, no? my only clue is the body shell.

why not post the DTC error , not your interpretations?
on newer cars there are up to 5 or more EGR DTCs.
the exact dtc or the lack of some , tell the FULL STORY.
for example on newer cars there is EGR feedback readings.

btw: i own a 04GV and have 100%+ documentation on it and can fix any EGR fail on any car made, sure can. GEN1 , to GEN now.
but need more INFO.

Feb 17, 2014 | Suzuki Grand Vitara Cars & Trucks

1 Answer

I have a 2004 Saturn Ion 2.2L. Check engine light is on. Has two codes, PO174 Bank 2 lean, and PO401 Egr Flow problem. I looked for the EGR valve, but there is only a plate covering the spot where it...


someone removed the egr. or someone replaced the engine with a non egr engine. if the engine was changed you ether need to put an egr system on it or change the computer with one made for an egr exempt engine.

Mar 18, 2013 | Cars & Trucks

1 Answer

What does the check engine code p0406 mean on my dodge caravan with a 3.3L engine?


P0406 - Exhaust Gas Recirculation Sensor A Circuit High
An improper voltage signal is sent to ECM through the valve

Early Models : The EGR valve control the amount of exhaust gas routed to the intake manifold. Vacuum is applied to the EGR valve in response to the throttle opening. The vacuum control the movement of the taper valve connected to the vacuum diaphragm in the EGR valve.

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Late Models : The EGR volume control valve uses a step motor to control the flow rate of EGR from exhaust manifold. This motor has four winding phases. It operates according to the output pulse signal of the ECM. Two windings are turned ON and OFF in sequence. Each time an ON pulse is issued, the valve opens or closes, changing the flow rate. When no change in the flow rate is needed, the ECM does not issue the pulse signal. A certain voltage signal is issued so that the valve remains at that particular opening.

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Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Engine hesitation

Possible causes
- Harness or connectors (EGR volume control valve circuit is open or shorted.)
- EGR volume control solenoid valve
- EGR temperature sensor and circuit

Possible solution
- Repair EGR harness or connector
- Replaced EGR volume control solenoid valve
- Replaced EGR volume control valve


Hope helps (remember to rate and comment this answer).

Mar 31, 2011 | Dodge Caravan Cars & Trucks

2 Answers

Engin light #po406 2005 ram quad cab


P0406 - Exhaust Gas Recirculation Sensor A Circuit High

Early Models : The EGR valve control the amount of exhaust gas routed to the intake manifold. Vacuum is applied to the EGR valve in response to the throttle opening. The vacuum control the movement of the taper valve connected to the vacuum diaphragm in the EGR valve.

zjlimited_230.gif

Late Models : The EGR volume control valve uses a step motor to control the flow rate of EGR from exhaust manifold. This motor has four winding phases. It operates according to the output pulse signal of the ECM. Two windings are turned ON and OFF in sequence. Each time an ON pulse is issued, the valve opens or closes, changing the flow rate. When no change in the flow rate is needed, the ECM does not issue the pulse signal. A certain voltage signal is issued so that the valve remains at that particular opening.

zjlimited_231.gif

Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Engine hesitation

Possible causes
- Harness or connectors (EGR volume control valve circuit is open or shorted.)
- EGR volume control solenoid valve
- EGR temperature sensor and circuit

Possible solution
- Repair EGR harness or connector
- Replaced EGR volume control solenoid valve
- Replaced EGR volume control valve
When is the code detected?
- An improper voltage signal is sent to ECM through the valve


Hope helps.

Mar 06, 2011 | 2005 Dodge Ram

1 Answer

I recently change the egr valve on my car due to P0401


Could be clogged egr passages in the intake. Also could be just do to a reflash needed of the computer. GM has come up with new software for the computer to fix this problem.

May 19, 2010 | 2000 Chevrolet Monte Carlo

1 Answer

2000 mazda 626 check engine light went on . code


probley not egr valve it probley egr control solenoid or wiring

Apr 11, 2010 | 2000 Mazda 626

3 Answers

Code P0401 EGR Insufficient Air flow detected - 2000 Toyota camry


how I change the EGR valve assist switch for toyota camry 2000

Jul 29, 2009 | 1996 Toyota Camry

1 Answer

Service engine soon light


if it is for the EGR valve again, replace the valve and the DPFE sensor. Not sure what an EGR regulator is. Could be a bad hose going to the DPFE, or a clogged tube or EGR port also.

Jun 18, 2009 | 2002 Ford Explorer

2 Answers

2002 Crown Victoria check engine light stays on


also have them change the oxygen sensors, if it's deemed necessary. have someone reset the computer. if the light stays off, then you don't have to.

Jun 14, 2009 | 2002 Ford Crown Victoria

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