PT Cruiser Forum  
Advertisements
       

Go Back   PT Cruiser Forum > General Forums > Tech & Performance Forum

PT Cruiser Forum

Advertisements
Need help with error code P0138

 
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 18 Jan 2012, 01:38 pm
Fresh Cruiser
 
Join Date: Aug 2011
Posts: 15
Default Need help with error code P0138

Hi,

My car is getting the error code P0138. I checked that it is about the O2 sensor. Some people saying it is upstream, while others saying it is downstream. I was trying to look for the O2 sensor on ebay and see some 5 digit number like 231xx. My vehicle is 2003 Dream Cruiser with manual transmittion. I think it is the similar to a 2003 GT. The questions are:

Which sensor should I buy?
Is it upstream or downstream?
Is there any instruction to replace the sensor?
Is it an easy job or I need some mechanic to do it?

Thank you.
Reply With Quote
  #2 (permalink)  
Old 18 Jan 2012, 05:43 pm
VNT's Avatar
VNT VNT is offline
Senior Cruiser
 
Join Date: Jun 2009
Location: NE
Posts: 1,468
Default Re: Need help with error code P0138

IMHO

Buy Mopar O2 sensors, or your asking for problems.

The reason is they have fast sample response time , and if you go and get after market they may not respond as fast and will trigger codes and cause all kinds of issues.

Call the dealer and get the part # and go on line to one of the mopar online centers to save a few bucks but e-bay is not your friend.


Replace both sensors and they can be stubborn and awkward to get out so if your not a DIY, pay someone.
__________________
VNT

86 TurboZ CS 2.2 T2 +20's A555
00 Durango SLT+ 5.9 4x4
02 Grand Cherokee 4.7 4x4
03 PT GT Black 5 sp Stg 1 sold
05 PT GT Silver 5 Spd Conv
06 PT GT Cool Vanilla 5 spd Conv
06 PT Base Marine Blue 40TE Conv
15 Grand Cherokee Overland 5.7 QD2
17 Challenger SRT A8 GoMango
18 JL Wrangler Sahara Punkn
20 JL Wrangler Rubicon Ocean Blue
Reply With Quote
  #3 (permalink)  
Old 19 Jan 2012, 12:43 am
UptownSport's Avatar
Veteran Cruiser
 
Join Date: Jan 2011
Location: 55403
Posts: 3,918
Default Re: Need help with error code P0138

This JUST came up- Crewzin, (IIRC) explained which sensor the code referred to.
Sorry I don't recall the specifics.

I do know the old Neon downstream was only to check Cat performance, not to give info PCM could use to adjust engine parameters.
Reply With Quote
  #4 (permalink)  
Old 19 Jan 2012, 08:37 am
Obsessed Cruiser
 
Join Date: Sep 2001
Posts: 27,757
Default Re: Need help with error code P0138

P0138 HO2S Circuit High Voltage Bank 1 Sensor 2

The PT Cruiser only has one "bank". The code is generic for ours and the V8 engine which have 2 banks (one per side). My Vette has 3 02 sensors, one on each exhaust manifold and 1 by the CAT. So the tech and tell which sensor is bad the code tells him "Bank 1", (drivers side) or "Bank 2" Passenger side.

So forget the "Bank" part of the fault code readout on the PT.

Sensor 1 (on the PT) is on top of the exhaust manifold.



Sensor 2 is on the left side of the Catalytic converter.

__________________
Rules of the forum have been updated as of *07/07/2019* Please read them over.

- All decisions by the Moderator are semi-permanent, can and may be changed at his discretion but definitely will be the final word. Any action performed by the Administrator or Moderators are not to be discussed on the forum.

Last edited by CREWZIN; 19 Jan 2012 at 08:44 am.
Reply With Quote
  #5 (permalink)  
Old 27 Jan 2012, 11:52 am
Fresh Cruiser
 
Join Date: Aug 2011
Posts: 15
Default Re: Need help with error code P0138

Thanks for all the input.

I am the kind of DIY person if I have the instruction. I did a few research and found that to replace the O2 sensor is like plug and play. However I could not see clearly in the pictures above. Are the sensors under the hood or under the vehicle? It will be tough for me if they are under the vehicle since I do not have the equipments.
Reply With Quote
  #6 (permalink)  
Old 27 Jan 2012, 03:32 pm
UptownSport's Avatar
Veteran Cruiser
 
Join Date: Jan 2011
Location: 55403
Posts: 3,918
Default Re: Need help with error code P0138

Both-

Upper is behind the engine, in the engine compartment

Lower is on the side of exhaust right after catylitic converter.

You can drive vehicle over a hole or depression, or one wheel up on and object so you can crawl under.

If wheels blocked sufficiently this is actually safer than jacking it up and crawling under.
Reply With Quote
  #7 (permalink)  
Old 29 Jan 2012, 08:00 pm
Travis2k7's Avatar
Cool Cruiser
 
Join Date: May 2009
Location: Seattle, WA
Posts: 406
Default Re: Need help with error code P0138

Quote:
Originally Posted by CREWZIN View Post
P0138 HO2S Circuit High Voltage Bank 1 Sensor 2

Sensor 1 (on the PT) is on top of the exhaust manifold.

Sensor 2 is on the left side of the Catalytic converter.

I took this advice with the same code a couple years ago and changed sensor 2. The code has never come back.
__________________
2006 Limited, Auto, 100k miles
Reply With Quote
  #8 (permalink)  
Old 31 Jan 2012, 04:20 pm
Fresh Cruiser
 
Join Date: Aug 2011
Posts: 15
Default Re: Need help with error code P0138

The wierd thing is that the engine light turned off for about a week. The error code appeared when the temperature was below 30 degree. It is back to about 0 degree now. Does it mean the sensor is working?

Thank you.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
P0138 error code on a 2004 B P.T. cruiser jcb1972 General PT Cruiser Discussions 0 10 Oct 2010 09:43 am
Error Code 320 okla2001pt Tech & Performance Forum 1 17 May 2010 12:42 pm
Error code 601 COOLSILVER02NV Tech & Performance Forum 7 14 Jul 2009 10:52 am
Error Code saldagus Tech & Performance Forum 2 25 Nov 2008 09:51 pm
Error code??? russ00001 Tech & Performance Forum 0 29 May 2007 04:24 pm


All times are GMT -5. The time now is 02:33 pm.




Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
vB.Sponsors