P0181 - Chevy and GMC Duramax Diesel Forum

01-04.5 LB7 Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

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post #1 of 15 (permalink) Old 04-07-2008, 05:27 PM Thread Starter
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P0181

ive got a P0181, i noticed because i nad no power today, i was wondering what i need to do to fix this properly instead of just clearing the code, any suggestions would really help thanks nate

built motor, big turbos, built trans, etc all by me, parts from Elite Diesel

1016 hp

7.1 1/8 @ 100

11.27 @ 105
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post #2 of 15 (permalink) Old 04-07-2008, 05:30 PM
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Bad Fuel Temperature sensor

2003 GMC Sierra LB7

New motor in the works as we speak with lots of goodies!!!
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post #3 of 15 (permalink) Old 04-07-2008, 05:34 PM Thread Starter
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where is that sensor located

built motor, big turbos, built trans, etc all by me, parts from Elite Diesel

1016 hp

7.1 1/8 @ 100

11.27 @ 105
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post #4 of 15 (permalink) Old 04-07-2008, 05:47 PM
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Don't know!!!! I've never had to replace mine......someone correct me if i'm wrong but possibly in the fuel filter housing????

2003 GMC Sierra LB7

New motor in the works as we speak with lots of goodies!!!
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post #5 of 15 (permalink) Old 11-13-2009, 07:35 AM
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So i got this code yesterday didnt throw a check engine light just ran like it was stock on my big tune. Did you ever figure out where the sensor is and if that was the fix???
Thanks,
Derek

2003 GMC LB7 CC/SB
EFI by IdahoRob, Extreme Prejudice Built Trans, SDP Twins, UL-II Gauges, 5" Straight Pipe, PPE Boost Valve, FASS Fuel Pump (150GPH), Modded Intake Horn
12.78 @ 105, 657HP
-Derek
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post #6 of 15 (permalink) Old 11-13-2009, 08:02 AM
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I used to get this in the winter using the block heater, apparently the sensor activates the DTC because the fuel can gel on a diesel if its not cold enough. I was told to only use the heater is less than 20.

DMax BLACK '05 LS CC LB @ 100K miles, factory 2" lift, HID's
Banks Economind, IQ, Intake, SpeedBrake, Boost Tube, Monster Exhaust
Other AFE MP, Amsoil & Bypass, Ameriguard spray-in liner, Leer Cap, Bed Rack, Bug Guard, Inverter.
Crap Iron Cross Automotive Nerf Bars - NOT RECOMMENDED!!
Helpful Helm GM Service Manuals - like... 9000 pages!!
Rescue VHF Radio, Jotto Desk Laptop command center, Rescue Gear, Lotsa Flashy LED's, Shinny Decals
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post #7 of 15 (permalink) Old 11-13-2009, 08:05 AM
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Quote:
Originally Posted by DuraMac View Post
I used to get this in the winter using the block heater, apparently the sensor activates the DTC because the fuel can gel on a diesel if its not cold enough. I was told to only use the heater is less than 20.
Thats probably my problem then. Weird thing is it doesnt cut my power until i drive home from work. So i will stop plugging it in and put my intake heater back in.

2003 GMC LB7 CC/SB
EFI by IdahoRob, Extreme Prejudice Built Trans, SDP Twins, UL-II Gauges, 5" Straight Pipe, PPE Boost Valve, FASS Fuel Pump (150GPH), Modded Intake Horn
12.78 @ 105, 657HP
-Derek
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post #8 of 15 (permalink) Old 11-13-2009, 08:08 AM
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Incidentally, I have the full set of Helm service manuals for '05 which may be similar if I can look something up for you

DMax BLACK '05 LS CC LB @ 100K miles, factory 2" lift, HID's
Banks Economind, IQ, Intake, SpeedBrake, Boost Tube, Monster Exhaust
Other AFE MP, Amsoil & Bypass, Ameriguard spray-in liner, Leer Cap, Bed Rack, Bug Guard, Inverter.
Crap Iron Cross Automotive Nerf Bars - NOT RECOMMENDED!!
Helpful Helm GM Service Manuals - like... 9000 pages!!
Rescue VHF Radio, Jotto Desk Laptop command center, Rescue Gear, Lotsa Flashy LED's, Shinny Decals
Haulin B&W Turn Over Ball & Companion, Firestone Ride-Rite Air Lift Bags, '14 Heartland Warrior Toy Hauler, (12000lb dry), Kayaks, Harley
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post #9 of 15 (permalink) Old 11-13-2009, 08:11 AM
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Well if you could tell me where the Fuel Temperature sensor is located just incase it is bad. I hope it isnt though i guess i will see if she throws another code when i get off work.

2003 GMC LB7 CC/SB
EFI by IdahoRob, Extreme Prejudice Built Trans, SDP Twins, UL-II Gauges, 5" Straight Pipe, PPE Boost Valve, FASS Fuel Pump (150GPH), Modded Intake Horn
12.78 @ 105, 657HP
-Derek
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post #10 of 15 (permalink) Old 11-13-2009, 01:22 PM Thread Starter
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all it was in my case was plugging it in when it wasnt cold enough to need it. if i didnt plug it in everything was fine.

built motor, big turbos, built trans, etc all by me, parts from Elite Diesel

1016 hp

7.1 1/8 @ 100

11.27 @ 105
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