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E36 M3 (1992-1999) {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999


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Old Wed, Jul-14-2010, 01:34:50 AM   #1
e36bmw96
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Default p0135 ..cel

Hey Guys

So it's been about a week of trail and error type methods to fix this problem. The code is p0135 which is o2 sensor heater circut malfunction bank 1 sensor 1 I believe. I think the final step is just to buy new o2 sensor and replace it hope it works.

My questions are I guess is that where is the best place to buy OEM sensors, tischer gives them for about 180$ and I think realoem is similar maybe even a bit higher. Is there a good place to go for these?

And lastly is there anyone that knows what the problem could be and how its worthwhile to be fixed besides new o2 sensors. I have looked here and alot on bf.c and some say this fixes the problem while others don't. I have checked all the fuses and relays so this is really my last option. I guess I'm due for new o2 sensors soon so mine as well fix it
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Old Wed, Jul-14-2010, 01:51:40 AM   #2
Maginnovision
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If you have a scope you could check the heater for proper operation, or just check the resistance, though I'm not sure of the spec, I'd just check for any resistance, probably 3-8 ohms. Probably just need to replace the sensor though, those heaters don't last forever.
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Old Thu, Jul-15-2010, 04:36:00 AM   #3
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any updates im getting the same code on my car but an use ebay sensor and still got the same code

Quote:
Causes

A code P0135 may mean that one or more of the following has happened:

* O2 Heater element resistance is high
* Internal short or open in the heater element
* O2 heater circuit wiring high resistance
* open or short to ground in the wiring harness

Possible Solutions

* Repair short or open or high resistance in wiring harness or harness connectors
* Replace oxygen sensor (cannot repair open or short that occurs internally to sensor)

Last edited by cnotesdip; Thu, Jul-15-2010 at 04:45:43 AM.
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Old Thu, Jul-15-2010, 04:46:11 AM   #4
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The heater circuit is bad in teh sensor. Swap to opposing bank to confirm then replace. o2 sensors are only 70$ @ www.oxygensensors.com

The OEM on these is NTK.
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Old Thu, Jul-15-2010, 05:25:45 AM   #5
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my lines were torched burned melted together could the new wiring be causing resistance?
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Old Thu, Jul-15-2010, 02:19:23 PM   #6
e36bmw96
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Quote:
Originally Posted by WRXEATR View Post
The heater circuit is bad in teh sensor. Swap to opposing bank to confirm then replace. o2 sensors are only 70$ @ www.oxygensensors.com

The OEM on these is NTK.
This is what I am doing.
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Old Tue, Dec-04-2012, 09:25:05 PM   #7
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Default Re: p0135 ..cel

Quote:
Originally Posted by WRXEATR View Post
The heater circuit is bad in teh sensor. Swap to opposing bank to confirm then replace. o2 sensors are only 70$ @ www.oxygensensors.com

The OEM on these is NTK.
I know I'm bringing this thread back from the dead... but I went to the website and it shows different sensors for Cylinders 1-3 vs Cyl 4-6. Are they actually different sensors?

Which side is Cyl 1-3 and 4-6?
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Old Wed, Dec-05-2012, 02:37:35 AM   #8
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Default Re: p0135 ..cel

The pre cat and post cat sensors are different and you have two of each.
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Old Wed, Dec-05-2012, 02:45:34 AM   #9
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Originally Posted by zoti View Post
The pre cat and post cat sensors are different and you have two of each.
4 sensors! OMG. lol that sounds like $$$$$
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Discussing p0135 ..cel in the E36 M3 (1992-1999) Forum - {Euro - S50 B32 321hp @ 7400 rpm} {U.S. - S52 B32 240 hp @ 6000 rpm}
Total Produced: 71,212 - Years Produced: 1992 to 1999 at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)