Question about 2002 Pontiac Grand Am

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P0404 fault code

I have a P0404 fault code on my 02 grand am. I replaced the EGR Valve but the car still surges and lacks power during take off.

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Timming off.

Posted on Mar 06, 2009

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Check your cat drop the exhaust in front of cat and see if power comes back

Posted on Jul 22, 2012

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I have a 0402 fault code on my 16 hid xsara what does that mean?


OBD II Fault Code
  • OBD II P0402
Fault Code Definition
  • Excessive EGR Flow
Symptoms
  • Check Engine Light will illuminate
  • In most cases, there are no adverse conditions noticed by the driver
  • In some cases, there may be performance problems, such as dying at stop signs or rough idling, hesitation, misfires or lack of power (especially during acceleration), and a decrease in fuel economy
Common Problems That Trigger the P0402 Code
  • Excessive Vacuum signal or Electrical signal to the EGR Valve
  • The EGR Valve is defective and is opening too far or not properly closing
  • Lack of proper EGR system feedback to the computer from the:
    • Manifold Absolute Pressure Sensor (MAP)
    • EGR Temperature Sensor
Common Misdiagnoses
  • Ignition System
  • Fuel System
  • Oxygen Sensor
  • EGR Valve

Oct 31, 2016 | Cars & Trucks

1 Answer

Fault code po403/po404


the 403 is a circuit which can be a wiring , sensor or egr connection os faulty
http://www.obd-codes.com/p0403 http://www.obd-codes.com/p0404

Jul 19, 2016 | Cars & Trucks

1 Answer

How to fix p0404 and p0420


code p0404 refers to exhaust gas recirculation (EGR) valve position--range/performance problem ===causes --hose leakage/blockage--wiring ---EGR valve/solenoid
code p0420 refers to cat converter system bank 1-efficiency below threshold===causes --cat converter---wiring---HO2S 2

May 31, 2014 | 2007 Dodge Grand Caravan SXT Minivan

1 Answer

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

Replaced EGR and still not running right and throwing P0404 code


Code are used to diagnose a system fault

They are not used to indicate any part needs to be replaced

Have to start over & find a shop that can actually resolve
ALL your issues

Dec 23, 2012 | 2003 Pontiac Grand Am

1 Answer

Code P0404 EGR Flow CKT Range/Perf Any help on what this is? or what to do?


Possible causes- EGR volume control solenoid valve harness is open or shorted
- EGR volume control solenoid valve circuit poor electrical connection
- EGR volume control solenoid valve
- EGR temperature sensor and circuit

Nov 30, 2012 | 2001 Pontiac Grand Am SE

1 Answer

2006 super duty blowing white smoke lack of power and code po404


I'm assuming your engine is a 6.0L Diesel and if it is P0404 indicates a problem with the EGR sensor or valve, EGR position circuit, or a tubocharger vane problem.

Mar 22, 2011 | Ford F-350 Cars & Trucks

1 Answer

2005 dodge caravan diagnostic code p0404, please explain and do i replace the egr valve?


p0404 is-egr flow ckt range/performance, check egr, remove from vehicle and clean out carbon from valve and where it mounts on engine. also check the wireing connector and wire to valve. if this dosnt work, replace valve,

Apr 23, 2010 | 2005 Dodge Caravan

1 Answer

Just replaced EGR valve- had code P0404. It's


First question, did you clean the port or passage out or the cyl head where the valve mounts to, when the valve was taken off of the engine? 2nd question, did you replace the Vacuum transducer ( little black round valve, with a vacuum hose fitting) and the valve assy? After these items have been replaced, it usually needs to have the PCM (powertrain control module) reset with a scanner of some type.

Mar 07, 2010 | 2004 Dodge Grand Caravan

1 Answer

Please Help... p0404 and p0137 Error Codes (1999 Saturn SL1)


yes egr valve is a common thing on this saturn. very pricy and yes you need the rear o2 sensor good luck i have a used egr if interested off a sl2

Sep 29, 2008 | 1993 Saturn SL1

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