BANK 1 SENSOR 1 and BANK 2 catalyst below thresh - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Wrangler Forums > TJ Wrangler Technical Forum > BANK 1 SENSOR 1 and BANK 2 catalyst below thresh

Eliminate Hood Flutter!!!Steinjäger photo contest!TJ 5.25" Speaker Adapters - NalinMFG

Reply
Unread 02-08-2009, 07:50 PM   #1
04<TJ>renegade
Registered User
2008 JK Wrangler 
 
Join Date: Aug 2007
Location: Coastal North Carolina
Posts: 81
BANK 1 SENSOR 1 and BANK 2 catalyst below thresh

Need to know which oxygen sensor is bank 1 sensor 1 and which cat is bank 2...its a 2004 4.0L

__________________
SOLD 04 TJ X "Renegade": 8.8 rear HP30 front 3 link/4 link snorkel 35" km2s

98 TJ 4 Banger STOCK getting a 5.2 Magnum and starting over

Carolina Crawlerz
04<TJ>renegade is offline   Reply With Quote
Unread 02-08-2009, 11:37 PM   #2
Marholmes44
Registered User
1998 TJ Wrangler 
 
Join Date: Oct 2006
Location: South Florida
Posts: 40
Normally your bank one is right after the exhaust manifold and the bank 2 will be right after your cat but you should be able to ask someone at auto zone or advance to comfirm for sure.
Marholmes44 is offline   Reply With Quote
Unread 02-08-2009, 11:43 PM   #3
JHenry
Registered User
2005 TJ Wrangler 
 
Join Date: Feb 2009
Location: LasVegas
Posts: 14
what code is showing....?
JHenry is offline   Reply With Quote
Unread 02-09-2009, 07:35 AM   #4
Slithering_Joe
Registered User
1998 TJ Wrangler 
 
Join Date: Jun 2005
Location: Nobama, Morris County, NJ
Posts: 2,443
Bank #1 is always the group of cylinders on the side of the engine where the manufacturer designates where cylinder #1 is located. Some manufactures of inline engines may designate multiple banks. In the case of late model inline-6 Jeep engines, bank #1 contains cylinders 1-2-3, and bank #2 is 4-5-6. Cylinder #1 is located at the front or accessory/pully side of the engine for a Jeep.

In this context, "Sensor 1" is located upstream or before of the catalytic converter. "Sensor 2" is located downstream or after the catalytic converter. The PCM will compare the reading of O2 Sensor 2 to the reading of O2 Sensor 1 of the same bank to determine if the catalytic converter is working properly.

What code(s) are you getting?
__________________
4.0L TJ
Slithering_Joe is offline   Reply With Quote
Unread 02-09-2009, 08:36 AM   #5
jinx44
Registered User
1997 TJ Wrangler 
 
Join Date: Jan 2009
Location: Southeast Missouri
Posts: 210
Quote:
Originally Posted by Slithering_Joe View Post
Bank #1 is always the group of cylinders on the side of the engine where the manufacturer designates where cylinder #1 is located. Some manufactures of inline engines may designate multiple banks. In the case of late model inline-6 Jeep engines, bank #1 contains cylinders 1-2-3, and bank #2 is 4-5-6. Cylinder #1 is located at the front or accessory/pully side of the engine for a Jeep.

In this context, "Sensor 1" is located upstream or before of the catalytic converter. "Sensor 2" is located downstream or after the catalytic converter. The PCM will compare the reading of O2 Sensor 2 to the reading of O2 Sensor 1 of the same bank to determine if the catalytic converter is working properly.

What code(s) are you getting?
Absolutely correct.

As he said, which code are you throwing? P0430? That should be bank 2 catalyst.
__________________
Rusty's 5.5" lift, Sniperfab armor, PSC fenders, RR steering, Riddler diff cover, Teraflex Bellyup
8.8 rear spooled, HP 30 front ARB, 4.56s, Tera 2Lo kit, AA SYE
Fabtech front bumper, smitty rear/carrier, Smitty XRC8 winch, MM wireless control
35X12.50 Xterrains
jinx44 is offline   Reply With Quote
Unread 02-09-2009, 09:21 AM   #6
Slithering_Joe
Registered User
1998 TJ Wrangler 
 
Join Date: Jun 2005
Location: Nobama, Morris County, NJ
Posts: 2,443
Cylinder numbering varies from manufacturer to manufacturer.
| pulleys side | ------ | flywheel side |
Cylinder Numbering:

GM, Jeep V8:
2-4-6-8
1-3-5-7

Ford V8:
1-2-3-4
5-6-7-8

Jeep Inline-6
1-2-3-4-5-6

Jeep V6:
2-4-6
1-3-5
__________________
4.0L TJ
Slithering_Joe is offline   Reply With Quote
Unread 02-09-2009, 10:27 AM   #7
04<TJ>renegade
Registered User
2008 JK Wrangler 
 
Join Date: Aug 2007
Location: Coastal North Carolina
Posts: 81
I've got a P0135 and a P0432 codes. Any idea if its just the 02 sensor is does this mean the cat is gone to? I couldn't see how is cat is gone at 50k that seems premature.
__________________
SOLD 04 TJ X "Renegade": 8.8 rear HP30 front 3 link/4 link snorkel 35" km2s

98 TJ 4 Banger STOCK getting a 5.2 Magnum and starting over

Carolina Crawlerz
04<TJ>renegade is offline   Reply With Quote
Unread 02-09-2009, 10:47 AM   #8
timmytimm3
Registered User
2000 TJ Wrangler 
 
Join Date: Mar 2007
Location: By the firepit, CT
Posts: 384
I had a po432 code for a few days but had gone away? Is the 02 sensor starting to go? Should I just replace both of them?

Thanks
timmytimm3 is offline   Reply With Quote
Unread 02-10-2009, 01:19 PM   #9
04<TJ>renegade
Registered User
2008 JK Wrangler 
 
Join Date: Aug 2007
Location: Coastal North Carolina
Posts: 81
Quote:
Originally Posted by timmytimm3 View Post
I had a po432 code for a few days but had gone away? Is the 02 sensor starting to go? Should I just replace both of them?

Thanks
thats exactly wut mine did and now its back with 2 codes
__________________
SOLD 04 TJ X "Renegade": 8.8 rear HP30 front 3 link/4 link snorkel 35" km2s

98 TJ 4 Banger STOCK getting a 5.2 Magnum and starting over

Carolina Crawlerz
04<TJ>renegade is offline   Reply With Quote
Unread 02-10-2009, 05:46 PM   #10
chorndawg
Registered User
2005  
 
Join Date: Jan 2009
Location: Mass.
Posts: 51
Similar situation here....P2096.....already replaced the downstream O2 and the code came back after 45 miles.
chorndawg is offline   Reply With Quote
Unread 07-13-2009, 09:07 AM   #11
sbninja
Registered User
2004 TJ Wrangler 
 
Join Date: Aug 2004
Location: Long Island, NY
Posts: 690
Tag for update?
__________________
2004 Jeep Wrangler Sport - Black
WARN steering box skid,Nth degree Oil pan skid
RE 3.5" - M.O.R.E. 1" BL - M.O.R.E. 1" MML
15x8 Tech1 Rock Crawlers (4.5" BS)
35"x12.50x15 Dunlop Radial Mud Rovers
Aussie locked 30/ Ultimate 35 kit w/detroit

Black Jeep Club v2.0 Member #49
See Jeep Here
And here
sbninja is offline   Reply With Quote
Unread 07-13-2009, 01:05 PM   #12
97TJSoldier
Registered User
 
Join Date: Jun 2009
Location: Pa.
Posts: 14
hey little heads up when you guys are replacing these o2 sensors.....i ran into an issue where the scanner was saying that my upstream sensor (after the manifold) was "stuck on rich"....well i changed it and the problem never went away the jeep was running rich and it was the down stream sensor (at the catalyst) that was reading wrong saying that it was running fine when it was actually running rich.....other than that make sure your air filter is clean and the throttle body is clean....that sometimes will kick on the o2 sensor intermittently
97TJSoldier is offline   Reply With Quote
Unread 07-15-2009, 08:03 PM   #13
Crassshett
Registered User
 
Join Date: Aug 2004
Posts: 4
My 2003 jeep Liberty has a code P0153 coming up. It states bank 2 where in the world is that at? Please help...
Crassshett is offline   Reply With Quote
Unread 07-15-2009, 09:39 PM   #14
cj847
Registered User
1997 TJ Wrangler 
 
Join Date: Oct 2006
Location: AR
Posts: 1,186
A code is simply a code. It does not mean a certain component is bad (for example O2 sensor). It simply says a parameter is out of spec. Study what possible problems can throw a code before randomly replacing parts. Most codes have several possible causes.

http://www.obd-codes.com/trouble_codes/

If you are going to do a lot of this kind of work, invest in a code SCANNER, not a code reader. Scanners can retrieve freeze frame data, live data and test O2 sensors.
__________________
97 TJ Sport OPJ project (other peoples junk) I can't remember the last time I bought a new part.
cj847 is offline   Reply With Quote
Unread 05-09-2010, 03:46 PM   #15
Nagy34
Registered User
2003 TJ Wrangler 
 
Join Date: Dec 2009
Location: Canada
Posts: 5
Ok my engine light has been on for a very long time. I drive a 2003 TJ Wrangler 4.0. I knew the code was just an 02 sensor error code. Finally I am getting tired of the horrible fule milage and want this fixed. I did a little research and replaced a sensor (possibly the wrong one a month ago). After the sensor replacement there was no change in the error code, even after clearing the previous code a few times. The error code I am getting still presists. I am still fairly sure its a sensor that's giving this problem however, not 100% sure.
The scanner read out is as follows...

P0138
02 Curcuit High Voltage (Bank1, Sensor 2)
Freeze Frame Data
Fuel Sys 1 CL
Fuel Sys 2 CL
Calc Load (%) 21.18
ECT (c) 84
STFT B1(%) 0.00
LTFT B1(%) 0.00
STFT B2(%) 3.13
LTFT B2(%) 0.00
MAP (kPa) 70.00
Eng RPM 1600
Veh Speed Km/h 59

I really need to figure out what exact sensor Bank1 sensor2 is. More importantly where it is. Will simply replacing the sensor fix the problem or do i have other issues? Please have a look at this picture, and I even took a quick video. The picture is of the sensor I believe I need to replace.
http://home.cogeco.ca/~jeffnagy/Car/058.JPG

http://home.cogeco.ca/~jeffnagy/Car/Jeep.mov
Nagy34 is offline   Reply With Quote
Reply
Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.