All 4 o2 sensor codes

Acekid187 · 02-22-2015, 01:57 PM

Got on it on the highway and service engine light soon came on and bumped to map 4. These codes popped up
29F3 Faulty Low Fuel Pressure Sensor
2C9C Lambda probe heating in front of catalytic converter, input signal
2C9D Lambda probe heating in front of catalytic converter 2, input signal
2C9E Lambda probe heating behind catalytic converter, input signal
2C9F Lambda probe heating behind catalytic converter 2, input signal.

I have tried erasing codes threw the JB4 I have disconnected the battery in hopes of that doing something. Im at a lost. I have posted this on the other fourm but still havent been able to figure it out. If anyone can chime in it would be appreciated. I been looking for a fuse to see if that blew out but havent had luck on finding the right one.

chepy24 · 02-22-2015, 02:11 PM

did you recently install dp and or o2 sensors?

Shadow007 · 02-22-2015, 02:26 PM

+1
Those are the same codes I got when I did my turbo swap. You need to switch you o2 sensors they're backwards.

chepy24 · 02-22-2015, 02:39 PM

Quote:

Originally Posted by Shadow007

+1
Those are the same codes I got when I did my turbo swap. You need to switch you o2 sensors they're backwards.

my first guess

Acekid187 · 02-22-2015, 02:50 PM

I had the VVT stage 1s installed 3 months ago. DPs have been on for 2 years. Most recent work was a valve cover. I check the o2 connection on those and they are good

Acekid187 · 02-22-2015, 03:03 PM

Someone on the other fourm said to check the little black fuse box near the ecu which i have now found but cantt seem to get it open

Acekid187 · 02-22-2015, 03:40 PM

Ok after searching on youtube and google for forever i finally found a video on how to open the fuse box near the ecu. there is a blown 30 amp fuse in there. I will replace and report back

chepy24 · 02-22-2015, 05:10 PM

Quote:

Originally Posted by Acekid187

Ok after searching on youtube and google for forever i finally found a video on how to open the fuse box near the ecu. there is a blown 30 amp fuse in there. I will replace and report back

easy fix! awesome keep us posted

HeavyMetalRocker · 02-22-2015, 05:56 PM

Quote:

Originally Posted by Acekid187

Ok after searching on youtube and google for forever i finally found a video on how to open the fuse box near the ecu. there is a blown 30 amp fuse in there. I will replace and report back

can you post the link to the youtube video?? Might have a similar issue currently!

shawntech · 02-22-2015, 06:35 PM

If the fuse blew o2 wires are probably grounding out.

Acekid187 · 02-22-2015, 08:40 PM

Quote:

Originally Posted by HeavyMetalRocker

can you post the link to the youtube video?? Might have a similar issue currently!

Video is for an E46 but its the same little fuse box.

And so far the codes are still present. I was instructed by my bimmer tech buddy to do some driving and if it doesnt clear then its another issue or like some just stated that the wire is grounding out and causing that fuse to blow again

HeavyMetalRocker · 02-23-2015, 03:20 PM

Quote:

Originally Posted by Acekid187

Video is for an E46 but its the same little fuse box.

And so far the codes are still present. I was instructed by my bimmer tech buddy to do some driving and if it doesnt clear then its another issue or like some just stated that the wire is grounding out and causing that fuse to blow again

Thanks man!

Acekid187 · 02-23-2015, 09:41 PM

Quote:

Originally Posted by ls3c6

If the fuse blew o2 wires are probably grounding out.

you where completely right. The wire had touched something and cause the fuse to blow. I moved it and rewrapped it and replaced the fuse. Cleared the codes and all is well. thank you everyone for all you help

shawntech · 02-23-2015, 09:44 PM

Quote:

Originally Posted by Acekid187

you where completely right. The wire had touched something and cause the fuse to blow. I moved it and rewrapped it and replaced the fuse. Cleared the codes and all is well. thank you everyone for all you help

Excellent. Enjoy the car, wish I had downpipes!

Tiago@VRSF · 02-23-2015, 10:02 PM

Thanks for posting the result, should be helpful in the future

JDuke335i · 02-23-2015, 10:55 PM

Quote:

Originally Posted by Acekid187

Quote:

Originally Posted by HeavyMetalRocker

can you post the link to the youtube video?? Might have a similar issue currently!

Video is for an E46 but its the same little fuse box.

And so far the codes are still present. I was instructed by my bimmer tech buddy to do some driving and if it doesnt clear then its another issue or like some just stated that the wire is grounding out and causing that fuse to blow again

Is the fuse in the same place on a e90

chepy24 · 02-24-2015, 09:17 AM

Quote:

Originally Posted by Acekid187

you where completely right. The wire had touched something and cause the fuse to blow. I moved it and rewrapped it and replaced the fuse. Cleared the codes and all is well. thank you everyone for all you help

woop woop!! glad it was an easy fix!

Acekid187 · 02-24-2015, 01:57 PM

Quote:

Originally Posted by JDuke335i

Is the fuse in the same place on a e90

On e90/e92 it's in passenger side.

JDuke335i · 02-24-2015, 09:26 PM

Quote:

Originally Posted by Acekid187

Quote:

Originally Posted by JDuke335i

Is the fuse in the same place on a e90

On e90/e92 it's in passenger side.

Thanks

SmiLer89 · 08-26-2024, 08:20 AM

Quote:

Originally Posted by Acekid187

you where completely right. The wire had touched something and cause the fuse to blow. I moved it and rewrapped it and replaced the fuse. Cleared the codes and all is well. thank you everyone for all you help

Hi , I know is long time ago but I have exactly same problem with fuse , replaced and burn out again , did you remember what cable was the problem is the main wire or one of the o2 sensors wires ?
Thank you

02-22-2015, 01:57 PM	#1
Acekid187 Lieutenant 27 Rep 423 Posts Drives: E92 335i, E90 335i Join Date: Mar 2013 Location: Hawaii iTrader: (6)	All 4 o2 sensor codes Got on it on the highway and service engine light soon came on and bumped to map 4. These codes popped up 29F3 Faulty Low Fuel Pressure Sensor 2C9C Lambda probe heating in front of catalytic converter, input signal 2C9D Lambda probe heating in front of catalytic converter 2, input signal 2C9E Lambda probe heating behind catalytic converter, input signal 2C9F Lambda probe heating behind catalytic converter 2, input signal. I have tried erasing codes threw the JB4 I have disconnected the battery in hopes of that doing something. Im at a lost. I have posted this on the other fourm but still havent been able to figure it out. If anyone can chime in it would be appreciated. I been looking for a fuse to see if that blew out but havent had luck on finding the right one. __________________ 6K Halos, 6K interior Lights, 6K License plate lights, 5" VRSF FMIC, 3K Fogs, JB4 G5, Cyba air scoops, 19in ST1s, ACS Roof Spoiler, DCI, VRSF 3" DP, VRSF CP w/ Tial BOV, VVT Stage 1
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02-22-2015, 02:11 PM	#2
chepy24 Captain 30 Rep 780 Posts Drives: 2009 alpine white 335i xdrive Join Date: Nov 2013 Location: denver iTrader: (0)	did you recently install dp and or o2 sensors?
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02-22-2015, 02:26 PM	#3
Shadow007 Captain 65 Rep 605 Posts Drives: 2009 335i coupe monaco blue Join Date: Apr 2012 Location: El Paso, TX iTrader: (2)	+1 Those are the same codes I got when I did my turbo swap. You need to switch you o2 sensors they're backwards. __________________ F90 M5 Comp/ FI Exhaust, MAD pdownpipes / PG Intakes/ H&R Springs/ AG wheels E85 Z4M
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02-22-2015, 02:50 PM	#5
Acekid187 Lieutenant 27 Rep 423 Posts Drives: E92 335i, E90 335i Join Date: Mar 2013 Location: Hawaii iTrader: (6)	I had the VVT stage 1s installed 3 months ago. DPs have been on for 2 years. Most recent work was a valve cover. I check the o2 connection on those and they are good __________________ 6K Halos, 6K interior Lights, 6K License plate lights, 5" VRSF FMIC, 3K Fogs, JB4 G5, Cyba air scoops, 19in ST1s, ACS Roof Spoiler, DCI, VRSF 3" DP, VRSF CP w/ Tial BOV, VVT Stage 1
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02-22-2015, 03:03 PM	#6
Acekid187 Lieutenant 27 Rep 423 Posts Drives: E92 335i, E90 335i Join Date: Mar 2013 Location: Hawaii iTrader: (6)	Someone on the other fourm said to check the little black fuse box near the ecu which i have now found but cantt seem to get it open __________________ 6K Halos, 6K interior Lights, 6K License plate lights, 5" VRSF FMIC, 3K Fogs, JB4 G5, Cyba air scoops, 19in ST1s, ACS Roof Spoiler, DCI, VRSF 3" DP, VRSF CP w/ Tial BOV, VVT Stage 1
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02-22-2015, 03:40 PM	#7
Acekid187 Lieutenant 27 Rep 423 Posts Drives: E92 335i, E90 335i Join Date: Mar 2013 Location: Hawaii iTrader: (6)	Ok after searching on youtube and google for forever i finally found a video on how to open the fuse box near the ecu. there is a blown 30 amp fuse in there. I will replace and report back __________________ 6K Halos, 6K interior Lights, 6K License plate lights, 5" VRSF FMIC, 3K Fogs, JB4 G5, Cyba air scoops, 19in ST1s, ACS Roof Spoiler, DCI, VRSF 3" DP, VRSF CP w/ Tial BOV, VVT Stage 1
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02-22-2015, 06:35 PM	#10
shawntech The Wolf 272 Rep 1,013 Posts Drives: stuff Join Date: Oct 2013 Location: Midwest iTrader: (0) Garage List [0.00] 2019 BMW M850i conv ... [0.00]	If the fuse blew o2 wires are probably grounding out.
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02-23-2015, 10:02 PM	#15
Tiago@VRSF 2108 Rep 43,350 Posts Drives: F90 M5 Join Date: Dec 2007 Location: Doral, FL iTrader: (99) Garage List 2014 F30 328xi [0.00] 2015 F82 BMW M4 [0.00] 2013 Ducati 1199 Pa ... [0.00] 2008 BMW 335i [0.00]	Thanks for posting the result, should be helpful in the future
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