Question about 1996 Saturn SL

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ASM EMISSIONS TEST RESULTS - CODE P1406

WHAT DOES THIS CODE MEAN??

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  • Native2008 Dec 13, 2008

    What should be dune to fix this?

  • Anonymous Mar 17, 2014

    a fail emission testing

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1 Answer

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P1406 - EGR (Exhaust Gas Recirculation) Valve Pintle Position Circuit

You most likely have either a defective EGR position sensor or a peice of carbon holding the EGR pintle valve off it's seat.

Posted on Dec 07, 2008

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1 Answer

Buick errors 420, 401, 1406


P420 is EGR system malfunction P1406 is EGR pintle position problem be sure and check power and ground before condemning the valve and the P401 is catalyst code i would fix EGR code first clear monitors and run a drive cycle to see if the cat code returned although the egr and catalyst are separate systems an EGR that isn't functioning may cause the emissions levels to be too high for a marginal converter to diffuse resulting in the cat efficiency code

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I live in Ohio and cant seem to pass an aims emission test and the truck is a 1992 Jeep Wrangler the NO emissions keeps failing what can i do to pass the test?


have the obd codes checked, once they get checked, post the results here, and we will be able to better help you in a solution, I can assist you in defining what the codes mean, and how to repair your vehicle so that your emissions will drop below the required amounts so that you will pass the test

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My 1997 Honda Civic failed it's Emissions Test. See below the ASM Emission Test Results. What do you suggest I do to get the car to pass the smog test? ASM Emission Test Results: 15mph - RPM = 1587...


Jose, I don't know if this will give you the answer you are looking for because there are many things to consider here. The exhaust gas recirculation valve (EGR) is one of the main things involved in reducing NO emissions. This valve is controled by the power control module. (PCM) This is your vehicles computer. The PCM monitors the vehicles speed and will command the EGR to open when the vehicle attains a certain speed, which is why the ASM test being done is recorded at two different speeds. At 25 MPH your vehicle failed the hydrocarbon (HC) emissions limit and this could be for a number of reasons. When is the last time you car was tuned up? Old spark plugs, wires, clogged air filters, oxygen sensors, leaking injectors (personal experience) or the PCV valve could be contributing to the results of the test. I guess that the easiest way to go is to tune up the engine replacing the spark plugs, wires, air filter and the PCV valve and don't forget to have the oil changed at the same time. Only then should have the vehicle retested and see what the results are. Should it fail again you may have to consider having the EGR or the catalytic converter replaced depending on what portion of the test fails. If the NO fails I would consider the EGR. If the HC fails then I would consider the catalytic converter. Good luck with this.

Apr 05, 2011 | 1997 Honda Civic

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Asm test NOx (ppm) 1842 limit, 2259 emissions failed


any check engine lights on sounds like a oxygen sensor

Dec 09, 2010 | 1995 Saturn Sl

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Chevy pickup 350 vortex code p-1406 comes up can't find what code means in my book. i know it has something to do with manufacturer control auxiliary emissions controls. i don't know where to look for the...


DTC P1406 IS EGR VALVE PINTLE POSITION CIRCUIT MALFUNCTION CONDITIONS.POSSIBLE CAUSE EGR SOLENOID CONTROL CIRCUIT IS OPEN SHORTED TO GROUND OR TO B+ -CHECK EGR VALVE FUSE - OR THE EGR VALVE AND PCM HAS FAILED.

Jul 09, 2010 | 2002 Chevrolet Silverado 1500

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1991 Honda Accord LX failed EVAP test. The ASM Emission Test Results showed Test 25mph RPM 1933, %C02 MEAS 14.60, %02 MEAS 0.22, HC (PPM) MAX 61, GP 236, MEAS 19, CO (%) MAX 0.60, GP 2.10, MEAS 0.02, NO...


Things to consider or replace...

If you are getting a Check engine Light let me know, it will make things easier to diagnose.

Catalytic Converter
Oxygen Sensor
EGR Valve

May 17, 2010 | 1991 Honda Accord

1 Answer

MY CADILLAC DEVILLE 1997 DONT PASS SMOG IT FAILED THE HC (PPM) THE MAX WAS 47 THE AVE WAS 9 ND THE MEAS WAS 140 AT 15MPH AND AT 25MPH THE MAX WAS 31 AND THE AVE WAS 7 AND THE MEAS WAS 127.. CAN YOU TELL ME...


i'd start with a complete tune up. plugs, wires, pcv valve, gas and air filter. what engine code are you getting? normally vehicles 1996 and newer get a obd (computer) emissions test not an asm (tail pipe) test. and perhaps a new catylitic converter and oxygen sensors

Apr 17, 2010 | 1997 Cadillac DeVille

1 Answer

My car just failed smog emissions test, had high nox count, at 15 miles about double max allowed, at 25 mit iles per hour, triple max allowed. The car is a 91 plymouth voyager.During the test it smoked...


i would put a good tank of gas in the system. like 93 super.drive the car for about 1 week or at least 100 miles. i would also go to a good auto parts store.u should be able to buy a bottle of engine cleaner to pass the smog test.also when u bring the car in for the inspection.take it for a rideand get it nice and warmed up.

Mar 10, 2009 | 1991 Plymouth Voyager

1 Answer

2003 Lincoln LS code P1406


Hi........
On your LS.
The CODE P1406,
IS Mean: Differential Pressure Feedback egr. problem.

Ok.. Is just the definition for your code.
The DPFEGR.. is a Little BOX. Black Colour.

Is Normally connected to the EGR tube coming from the EXUAST MANIFOLD. with 2 small hoses.
Inspect the Hoses for broken, burn or stuck with carbon.
if you DON'T found nothing wrong.
Replace the DPFEGR. You van get from DEALER.
DON'T get from autoparts because they only offer one
UNIVERSAL. and most cases don't work right.

Ok.. I hope this help to try to fix your car.
Thank you for use fixya..

Aug 09, 2008 | 2003 Lincoln LS

1 Answer

Code reader


The code P1408 is no egr flow sensed, It may be that this code is tied to the O2 code P1138, check the egr flow by manully pulling the vlave open with your fingers, the engine will run really bad or stall, if it does'nt the egr passages are plugged with carbon and will need to be cleared, locate the underhood emissions ticker, it will show the location of the EGR valve. Repair the EGR fault first, disconnect the battery for 5 minutes minumiun and then drive it for a few days to see if codes return.

Jul 24, 2008 | 1998 Ford Windstar

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