6 SES codes, could all the o2 sensors went wrong?

2ndChance · 10-09-2013, 07:06 PM

A SES light came on couple months after my HFC install and because my car was in a shop fixing a minor accident and installing the amuse kit I did not pay attention to it until now that I've changed HFC for test pipes and drove my car after these months.

I got a total of 10 SES which I got rid of by clearing and resetting ecu and after that only 4 remained. but after a short drive 2 more pops in. Now I have 6 SES codes.

Since they say bank 1 and bank 2 I wonder if it is possible that ALL of the sensors, post-cat and pre-cat, driver and passenger side went wrong at the same time, or is there some kind fuse that controls all these sensor?

From what I've been reading, first two code 1148/1168 are related to pre-cat, and other two 0031 and 0037 are post cats. I've checked the wiring and they seemed to be ok, well connected and no melted wire or similar. If there was only 1 or two codes, I would gladly swapped sensors for new ones but all 4? I really cant think of one single cause for such coordinated failure.

For those who have solved this issue, please help.

critical · 10-09-2013, 07:46 PM

what kind of accident? i think you should have your electrical system checked out cause you don't get these codes from running hfc's or test pipes-these are indicating your voltage is off for the sensors. could be a short. i'm not an expert but there you go

2ndChance · 10-09-2013, 09:07 PM

Minor accident, someone bumped into my front and broke a headlamp, scratched front bumper, Then I installed the amuse. Never touched any mechanical components.

Jordo! · 10-10-2013, 05:49 AM

I'd check the wires on all four once again -- I think the low control circuit codes mean the O2 sensors aren't warming up properly.

I had a problem like this once and after we removed the O2 sensor we found a small break in the plastic insulation around the sensor wires.

2ndChance · 10-10-2013, 12:04 PM

Quote:

Originally Posted by Jordo!

I'd check the wires on all four once again -- I think the low control circuit codes mean the O2 sensors aren't warming up properly.

I had a problem like this once and after we removed the O2 sensor we found a small break in the plastic insulation around the sensor wires.

Jordo which sensors did you remove, post or pre cat?

SouthArk370Z · 10-10-2013, 12:18 PM

Testing procedures for the O2 sensors is in the FSM. You should be able to get a good idea of what's going on by monitoring the sensors using an OBD/CAN scanner that allows you to do so. Not sure if what you are using will do that but, if you already have the OBD-to-USB i/f, you can find the software for free.

Edit: since all the sensors are throwing DTCs, I suspect a wiring problem or extremely careless mods.

Chuck33079 · 10-10-2013, 12:23 PM

Quote:

Originally Posted by SouthArk370Z

Edit: since all the sensors are throwing DTCs, I suspect a wiring problem or extremely careless mods.

That's where my money is. Something got messed up during the TP install.

Stupid question, but are the sensors in the correct locations?

2ndChance · 10-10-2013, 01:26 PM

Quote:

Originally Posted by Chuck33079

That's where my money is. Something got messed up during the TP install.

Stupid question, but are the sensors in the correct locations?

I think so because only the post cats were disconnected. I have uprev and cypher but dont know which setting to read?

I also suspect it is an electrical problem. I might take it to the dealer for a deeper inspection

Chuck33079 · 10-10-2013, 01:29 PM

Did you DIY the test pipes, or did a shop do it? If a shop did it, I'd be back there right now explaining to them how they're going to fix it since they ****** it up.

2ndChance · 10-10-2013, 01:32 PM

Quote:

Originally Posted by Chuck33079

Did you DIY the test pipes, or did a shop do it? If a shop did it, I'd be back there right now explaining to them how they're going to fix it since they ****** it up.

A shop did it, but I've been having a SES before TP install.

The problem is, I wasn't able to read the codes until now.

Chuck33079 · 10-10-2013, 01:33 PM

I'd still let them try and fix it first. Telling a dealer to check out an electrical issue is like writing them a blank check.

Jordo! · 10-10-2013, 04:36 PM

Quote:

Originally Posted by 2ndChance

Jordo which sensors did you remove, post or pre cat?

Post, and only one, but the heater circuit codes usually mean the sensors are toast.

Random thing for me -- but there was clearly exposed wire on the sensor. replaced the sensor, problem solved.

On a related note, do you have defoulers for your secondary O2's or have you tried the steel wool trick(or both). In the end, for me, having that SES code disabled with uprev was the only solution for post cat codes (other than the heater one that is)..

10-09-2013, 07:06 PM	#1 (permalink)
2ndChance Base Member Join Date: Feb 2011 Location: Panama Posts: 240 Drives: like he stole it Rep Power: 199	6 SES codes, could all the o2 sensors went wrong? A SES light came on couple months after my HFC install and because my car was in a shop fixing a minor accident and installing the amuse kit I did not pay attention to it until now that I've changed HFC for test pipes and drove my car after these months. I got a total of 10 SES which I got rid of by clearing and resetting ecu and after that only 4 remained. but after a short drive 2 more pops in. Now I have 6 SES codes. Since they say bank 1 and bank 2 I wonder if it is possible that ALL of the sensors, post-cat and pre-cat, driver and passenger side went wrong at the same time, or is there some kind fuse that controls all these sensor? From what I've been reading, first two code 1148/1168 are related to pre-cat, and other two 0031 and 0037 are post cats. I've checked the wiring and they seemed to be ok, well connected and no melted wire or similar. If there was only 1 or two codes, I would gladly swapped sensors for new ones but all 4? I really cant think of one single cause for such coordinated failure. For those who have solved this issue, please help.

10-09-2013, 07:46 PM	#2 (permalink)
critical A True Z Fanatic Join Date: Oct 2012 Location: Washington Posts: 1,252 Drives: 09' 370z 7AT Rep Power: 16	what kind of accident? i think you should have your electrical system checked out cause you don't get these codes from running hfc's or test pipes-these are indicating your voltage is off for the sensors. could be a short. i'm not an expert but there you go __________________ Quaife w/ gears \|Stillen Gen 3\|SOLD FI Resonated Test Pipes \|SOLD FI 18'' \| 25row Stillen Race \| Progress 35mm/25mm sways \| Swifts/Koni\|Volk G25's\| Stoptech SS lines\|\|SPL Front/Rear Arms\|

10-10-2013, 05:49 AM	#4 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	I'd check the wires on all four once again -- I think the low control circuit codes mean the O2 sensors aren't warming up properly. I had a problem like this once and after we removed the O2 sensor we found a small break in the plastic insulation around the sensor wires. __________________ Enjoy it. Destroy it.

10-10-2013, 12:18 PM	#6 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	Testing procedures for the O2 sensors is in the FSM. You should be able to get a good idea of what's going on by monitoring the sensors using an OBD/CAN scanner that allows you to do so. Not sure if what you are using will do that but, if you already have the OBD-to-USB i/f, you can find the software for free. Edit: since all the sensors are throwing DTCs, I suspect a wiring problem or extremely careless mods. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

10-10-2013, 01:29 PM	#9 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	Did you DIY the test pipes, or did a shop do it? If a shop did it, I'd be back there right now explaining to them how they're going to fix it since they ****** it up. fuct likes this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

10-09-2013, 09:07 PM	#3 (permalink)
2ndChance Base Member Join Date: Feb 2011 Location: Panama Posts: 240 Drives: like he stole it Rep Power: 199	Minor accident, someone bumped into my front and broke a headlamp, scratched front bumper, Then I installed the amuse. Never touched any mechanical components.

10-10-2013, 01:33 PM	#11 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29539	I'd still let them try and fix it first. Telling a dealer to check out an electrical issue is like writing them a blank check. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Color codes	theDreamer	Exterior & Interior	17	06-17-2015 04:35 PM
Codes	JMac88	Intake/Exhaust	11	07-01-2011 11:34 AM
Axel Codes	Asquarecan	Engine & Drivetrain	5	05-20-2011 05:46 AM
car codes	370zproject	Other Vehicles	1	03-09-2010 02:02 AM