Codes p0380 and p0540 - 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 8 (permalink) Old 09-28-2010, 01:46 PM Thread Starter
alvero
 
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Location: Tahlequah, OK
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Codes p0380 and p0540

So two weeks ago I did the intake heater delete mod and just zip tied the coil out of the way, not unplugged or anything. Sunday was the first cold day here and when I started it the check engine light was on and those codes were on my edge cts. They have been recurring codes since.

Is this due to the heater being removed or is a glowplug bad? I haven't tried reinstalling it yet.

2002 LB7 CC/SB 2500HD 4x4. 202,000+ miles. 20% over industrial injection injectors.EfiLive-duramaxtuner.com. Airdog II 165. PPE Stage 5 Allison. Kryptonite HD tierods. Banks Monster Duals w/ muffler delete. Bill's custom intake. PPE Boost valve. Bill's custom intakes turbo horn. AMSOIL front-back w/ dual remote bypass.
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post #2 of 8 (permalink) Old 11-29-2010, 09:49 AM Thread Starter
alvero
 
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Codes 0540 and 0380 come on the second start after being cleared.

I've read there is some fuse beneath the fuse block, could I have blown it by pipe clamping the heater coil to one of the lines like I did? Would that fuse being blown cause these two codes? Help please

2002 LB7 CC/SB 2500HD 4x4. 202,000+ miles. 20% over industrial injection injectors.EfiLive-duramaxtuner.com. Airdog II 165. PPE Stage 5 Allison. Kryptonite HD tierods. Banks Monster Duals w/ muffler delete. Bill's custom intake. PPE Boost valve. Bill's custom intakes turbo horn. AMSOIL front-back w/ dual remote bypass.
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post #3 of 8 (permalink) Old 11-29-2010, 08:40 PM Thread Starter
alvero
 
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Surely someones had these two codes?

2002 LB7 CC/SB 2500HD 4x4. 202,000+ miles. 20% over industrial injection injectors.EfiLive-duramaxtuner.com. Airdog II 165. PPE Stage 5 Allison. Kryptonite HD tierods. Banks Monster Duals w/ muffler delete. Bill's custom intake. PPE Boost valve. Bill's custom intakes turbo horn. AMSOIL front-back w/ dual remote bypass.
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post #4 of 8 (permalink) Old 12-04-2010, 04:27 PM
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380 is glow plugs.I know if I dont wait for the start light to go out before I start it when cold the 380 code will come up and/or you have bad glow plugs.540 is Intake Air Heater A Circuit

catD8RII

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post #5 of 8 (permalink) Old 12-04-2010, 05:49 PM
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i had the same codes is the intake heater one set off by the glow plugs also how do i determine which glow plug what is the intake air heater also
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post #6 of 8 (permalink) Old 12-05-2010, 08:20 AM
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Quote:
Originally Posted by crazylegs View Post
i had the same codes is the intake heater one set off by the glow plugs also how do i determine which glow plug what is the intake air heater also
The air intake heater is the delete mod you did two weeks ago,I dont think that code is set off by the glow plugs.
I would imagine a simple ohm test will find which glow plug is bad.

catD8RII

2012 GMC Sierra SLT CC SB 4x4
Stock with that wonderful DEF/Fuel burning exhaust


02 GMC Sierra CC SB 4x4
Rolling Big Power 4" Turbo back exhaust
Rolling Big Power 50,80,95,130 Hp controller
Nitto 305/85-16 0n stock rims.
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post #7 of 8 (permalink) Old 02-10-2011, 08:27 AM Thread Starter
alvero
 
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I took a voltmeter to it this morning. Never bothered before haha but now the truck wouldn't start this morning when it was -18 here in OK (very abnormal).

The red wire that runs into the glowplug controller should be hot constantly, correct?
I get 0.00 volts when the truck is in WTS mode then 86 mV other times. I didn't unbolt it and check because about that time my fingers were numb but is this for sure a bad controller? It probably won't be this cold here again anytime soon.

Btw, the p0540 code dissappeared with a new ecm from dmaxtuner.com but of course there are 0 volts at the heater.

2002 LB7 CC/SB 2500HD 4x4. 202,000+ miles. 20% over industrial injection injectors.EfiLive-duramaxtuner.com. Airdog II 165. PPE Stage 5 Allison. Kryptonite HD tierods. Banks Monster Duals w/ muffler delete. Bill's custom intake. PPE Boost valve. Bill's custom intakes turbo horn. AMSOIL front-back w/ dual remote bypass.
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post #8 of 8 (permalink) Old 02-10-2011, 11:47 AM Thread Starter
alvero
 
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Location: Tahlequah, OK
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Didn't think about it earlier but the 175 amp fuse has 12 on one side and 0 on the other haha yea problem solved..I hope

2002 LB7 CC/SB 2500HD 4x4. 202,000+ miles. 20% over industrial injection injectors.EfiLive-duramaxtuner.com. Airdog II 165. PPE Stage 5 Allison. Kryptonite HD tierods. Banks Monster Duals w/ muffler delete. Bill's custom intake. PPE Boost valve. Bill's custom intakes turbo horn. AMSOIL front-back w/ dual remote bypass.
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