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Unread 01-06-2014, 07:26 PM   #1
wyattwj123
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2000 WJ 
 
Join Date: Feb 2012
Location: sarasota, florida
Posts: 259
2011 liberty p0401 code

Hey guys about 35000 miles on my jeep, randomly my check engine light will come on about 75% of the time it's on! Exhaust gas like egr? Engine doesn't run rough runs great! Engine temp good no other problems except the code! What's the problem with my jeep it's practically brand new to me so this sucks!any help is appreciated thanks.

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Unread 01-06-2014, 07:39 PM   #2
BenHoleton
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2008 KK Liberty 
 
Join Date: Dec 2011
Location: Pekin, IL
Posts: 486
EGR valve I think. You're in warranty. Have a dealer look at it
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Unread 01-07-2014, 12:02 PM   #3
JeepCares
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Join Date: Jan 2012
Location: MOPAR World Headquarters, Chrysler Group LLC
Posts: 2,511
I found a Service Bulletin that may (or may not) be applicable:

NUMBER: 18-014-11 REV. A
GROUP: Vehicle Performance
DATE: September 15, 2011
SUBJECT:
Flash: MIL Illumination P0401 - EGR System Performance
OVERVIEW:
This bulletin involves selectively erasing and reprogramming the Powertrain Control
Module (PCM) with new software.
MODELS:
**2009 - 2011** (KA) Nitro
**2009 - 2011** (KK) Liberty
NOTE: This bulletin applies to models equipped with a 3.7L engine (sales code EKG)
and an automatic transmission (DGV) built before February 23, 2011 (MDH
0223XX).
SYMPTOM/CONDITION:
Some customers may complain of MIL illumination. No other symptoms will be noted or
experienced. Further investigation by the technician may find DTC P0401 - EGR System
Performance is set.
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Unread 01-08-2014, 08:13 AM   #4
wyattwj123
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2000 WJ 
 
Join Date: Feb 2012
Location: sarasota, florida
Posts: 259
Quote:
Originally Posted by JeepCares
I found a Service Bulletin that may (or may not) be applicable: NUMBER: 18-014-11 REV. A GROUP: Vehicle Performance DATE: September 15, 2011 SUBJECT: Flash: MIL Illumination P0401 - EGR System Performance OVERVIEW: This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. MODELS: **2009 - 2011** (KA) Nitro **2009 - 2011** (KK) Liberty NOTE: This bulletin applies to models equipped with a 3.7L engine (sales code EKG) and an automatic transmission (DGV) built before February 23, 2011 (MDH 0223XX). SYMPTOM/CONDITION: Some customers may complain of MIL illumination. No other symptoms will be noted or experienced. Further investigation by the technician may find DTC P0401 - EGR System Performance is set.
How to do I show this to the dealer
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Unread 01-09-2014, 09:30 AM   #5
JeepCares
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Join Date: Jan 2012
Location: MOPAR World Headquarters, Chrysler Group LLC
Posts: 2,511
Print it off the forum - or give them the number and they can look it up.
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