1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Engine codes P0404 & P1414 - what to do?

Thread Tools
 
Search this Thread
 
Old Aug 7, 2005 | 12:37 PM
  #1  
srgetz's Avatar
Thread Starter
Member
Posts like a V-Tak
 
Joined: Sep 2003
Posts: 45
Likes: 0
srgetz is on a distinguished road
Default Engine codes P0404 & P1414 - what to do?

I am getting the following codes, just bought a scanner. What to do, can the EGR be cleaned instead of replaced?
P0404 Exhaust Gas Recirculation (EGR) Open Position Performance
P1414 Says something like "Emissions Controller"
Reply
Old Aug 7, 2005 | 02:46 PM
  #2  
markwb's Avatar
Senior Member
True Car Nut
 
Joined: Oct 2002
Posts: 2,703
Likes: 0
From: Groton, CT _NEBF 05, 06, 07_
markwb is on a distinguished road
Default Re: Engine codes P0404 & P1414 - what to do?

Originally Posted by srgetz
What to do, can the EGR be cleaned instead of replaced?
P0404 Exhaust Gas Recirculation (EGR)
P1414 Says something like "Emissions
The EGR valve can be removed and cleaned. Look for deposits around the seat & pintle, then clean. The pintle needs freedom to operate and shoudn't stick.
The EVAP system is trying to tell you something, not sure of that DTC 1414 though. You may have a vacum leak, or one of the valves in the evap sys are failing. Or gas cap is not holding vacum. Could be any number of things, but there'* a few ideas.
Reply
Old Aug 7, 2005 | 02:53 PM
  #3  
LakevilleSSEi's Avatar
Senior Member
True Car Nut
 
Joined: Sep 2004
Posts: 9,130
Likes: 0
From: Farmington, Minnesota =MWBF '05 SURVIVOR= =CEBF '06 SURVIVOR= =August '06 COTM=
LakevilleSSEi is on a distinguished road
Default

P 0404 = EGR System Performance
Will Set off a SES light

P 1414 = None existant. Sure it'* not a P 1404 or 1441?

EGR Valve Closed or EVAP System Flow Durning Non-Purge?
Reply
Old Aug 7, 2005 | 02:59 PM
  #4  
srgetz's Avatar
Thread Starter
Member
Posts like a V-Tak
 
Joined: Sep 2003
Posts: 45
Likes: 0
srgetz is on a distinguished road
Default

Forgot to mention, the car is stumbling out of the hole, especially cold. I am guessing the valve is stuck open and causing the poor performance?
Reply
Old Aug 7, 2005 | 03:08 PM
  #5  
LakevilleSSEi's Avatar
Senior Member
True Car Nut
 
Joined: Sep 2004
Posts: 9,130
Likes: 0
From: Farmington, Minnesota =MWBF '05 SURVIVOR= =CEBF '06 SURVIVOR= =August '06 COTM=
LakevilleSSEi is on a distinguished road
Default

Sounds like it'* sticking shut actually....the EGR also helps to warm the intake air....To warm the motor up quicklky.
Reply
Old Aug 7, 2005 | 04:01 PM
  #6  
srgetz's Avatar
Thread Starter
Member
Posts like a V-Tak
 
Joined: Sep 2003
Posts: 45
Likes: 0
srgetz is on a distinguished road
Default

Thanks for all the info so far. So will the EGR cause this performance problem, the hesitation? What if I just unplug it? Any pros / cons to that?
Reply
Old Aug 7, 2005 | 04:35 PM
  #7  
BillBoost37's Avatar
DINOSAURUS BOOSTUS

Expert Gearhead
 
Joined: Mar 2005
Posts: 41,391
Likes: 30
From: Enfield, CT
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

If you just unplug it'll give you a light.

Attempt the cleaning and use a fresh gasket. Also try plugging and unplugging the connector about 5 times.
Reply
Old Aug 7, 2005 | 10:03 PM
  #8  
srgetz's Avatar
Thread Starter
Member
Posts like a V-Tak
 
Joined: Sep 2003
Posts: 45
Likes: 0
srgetz is on a distinguished road
Default

Well ok, but what I mean is can unplugging it help with the hesitation and can it harm anything? I don't care if the check engine light is on for now....
Reply
Old Aug 8, 2005 | 05:12 PM
  #9  
markwb's Avatar
Senior Member
True Car Nut
 
Joined: Oct 2002
Posts: 2,703
Likes: 0
From: Groton, CT _NEBF 05, 06, 07_
markwb is on a distinguished road
Default

Originally Posted by srgetz
Well ok, but what I mean is can unplugging it help with the hesitation and can it harm anything? I don't care if the check engine light is on for now....
I don't believe that disconnecting the EGR will have any affect on the hesitation, nor will it do harm to the engine, but I would restore to normal asap.
Reply
Old Aug 9, 2005 | 08:31 PM
  #10  
srgetz's Avatar
Thread Starter
Member
Posts like a V-Tak
 
Joined: Sep 2003
Posts: 45
Likes: 0
srgetz is on a distinguished road
Default

OK - I unplugged it as I don't have time to clean it yet. The hesitation went away completely

What does this indicate? Is is safe for the engine and emissions system to leave it unplugged? will cleaning the EGR still be worthwhile?
Reply



All times are GMT -4. The time now is 09:28 PM.