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P0404, p0405, p1404

Chenged egr because the codes were all related and I heard from a mopar tech they were known for it and the p0404 came right back

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Codes PO404, 405, PO457, 456. replaced gas cap with mopar cap. Light didn't go off right away, but when i filled up, it went off, but came back on at about 100 miles. How serious are these issues, and am...


It's not an immediate danger, but certainly needs attention for improved efficiency, driveability, and best gas mileage. And to protect expensive parts, like the catalytic converter, for one.

You have two issues with those codes. P0404 and 05 refer to the EGR operation. Exhaust Gas Recirculation is an emissions system, it helps regulate combustion temperatures inside the cylinders. P0405 is EGR, sensor A circuit low. That fault probably also set the P0404 as it says circuit range or performance of EGR is at fault. This is the more serious issue. When you can, it needs some tests of the EGR operation, finding the problem in the circuit of that sensor, or whatever it is. The egr valve may not be opening enough, or it may be a wiring problem, should be easy to check and test.

The other codes are the ones that drive people crazy, and sometimes technicians, too. P0456 is Evaporative Emission Control System, Leak Monitor small leak detected. I didn't see 0457 in a generic listing of codes, it may be more specific to Chrysler, but I'm sure it is related to 0456, it's in the EVAP system at any rate. Good that you already tried a new gas cap, that often sets the codes. A small leak somewhere between the charcoal canister and the gas tank's vent line where the gas fumes travel through, and the piping of the canister to the engine and the purge valve, all that has to be checked for a small leak. Shops use a trick: a smoke test where they blow fog or smoke into the system and then start looking for leaks. This issue doesn't affect drivability at all. Don't let it drive you crazy !

Oct 03, 2013 | 1999 Lincoln Navigator

1 Answer

I have a 1997 olds achieva with codes p0404 and p0405. i have replaced the egr valve with no change in codes.


when codes are set it does not mean a part is defect ,there is wires connect to it. EGR solenoid are 3 solenoid with 3 holes one 1/7orifice: second is 2/7 third 4/7 pcm command those solenoid to obtain the right amount of exhaust but P0404 said performance is bad and P0405 said circuit A is low or 0volt . pull wire one by one see if it bounce mean wire is cut inside

Sep 14, 2013 | Oldsmobile Cars & Trucks

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My 02 grand am gt is acting up engine light is on went to autoparts store to get it checked out it threw codes p1404, p0404 and p0300 i already changed the egr valve twice and it wont help can someone plz...


code p0404 refers to Exhaust gas recirculation system (EGR)--range performance problem--- causes---hose leakage--wiring---EGR valve/solenoid
code p0300 refers to random/multiple cylinder/s ---misfire detected.---causes---spark plugs---ht leads---injectors--ignition coils---low compression ---wiring. Remember it is best to use genuine sensors/solenoids as the cpu is set to them. Try changing the egr solenoid

PLEASE RATE THIS REPLY FOR ACCURACY

Mar 24, 2013 | 2000 Pontiac Grand Am GT

1 Answer

I am getting two codes from my 05 equinox it's


    P0404
    EGR Sensor Circuit Range/Performance, Stuck Open, to fix, either clean out or replace it, this should do it. p1404 relates to same problem. replace EGR and you should be ok. dont forget to clear the code when repaired.

    May 01, 2012 | 2005 Chevrolet Equinox

    1 Answer

    Want to know about engine codes: p0134,p0404,p1404.


    You have an O2 Sensor Code & a couple of EGR
    Codes

    I would guess the EGR issues are setting the O2 Code

    Apr 01, 2011 | 2003 Chevrolet Impala

    1 Answer

    I have a 2005 6.0 liter powerstroke f-350 with codes P0404 and P0405, I have tried cleaning the egr valve and reset the code worked fine for a little while then the codes came back.


    I have a 2005 6.0 liter powerstroke f-250 with P0404 and P0405, I have tried cleaning the egr valve and reset the code worked fine for a little while then the codes came back. Any Idea what's going on?

    Jun 15, 2010 | 2003 Ford F150 Regular Cab

    1 Answer

    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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