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Discussion Starter · #1 ·
My truck has been sitting for a week. I was driving and it went into limp mode throwing codes p0201, p0204, p0206, p0207.

After a while of checking around with out tools it finally started running right. Towed it home anyways. I checked around the fcim to see if any wires were messed up. It was wrapped really good.

I found this the wires were all covered. The one in the picture was spliced together at one point I'm guessing. The one side of it you can see bare wire and it looks like there is another wire next to it. The bare wire doesn't appear to be broken should I tape it up or re splice it back together?

Think this is possibly the problem? Thanks

I've been searching seems like most problems like this are on the LLY.
 

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are you sure you have a VIN 1 motor? Just asking
 

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are you sure you have a VIN 1 motor? Just asking
Manufacturer Part Number: 8972160776 01-04
Looking at your picture, normally wires are the same size from pigtail to where ever. Yours are not. I would start by fixing that so called splice.
I wonder what caused the stretch to make the bare wire.
A circuit condition is detected on a fuel injector circuit for cylinders 1, 4, 6, or 7, DTCs P0201, P0204, P0206, P0207

This is for P1262 but it has your codes in it.

DTC DTC P1262
Circuit DescriptionThe fuel injection control module (FICM) supplies high voltage to each fuel injector on the ignition voltage circuits. The FICM energizes each fuel injector by grounding the command circuit between the FICM and the fuel injector. The FICM monitors the status of the ignition voltage circuits and the fuel injector command circuits. When a fuel injector circuit condition is detected by the FICM, all of the fuel injectors on the affected ignition voltage circuit will be disabled. If a circuit condition is detected on a fuel injector circuit for cylinders 1, 4, 6, or 7, DTCs P0201, P0204, P0206, P0207 will set, along with DTC P1261. If a circuit condition is detected on a fuel injector circuit for cylinders 2, 3, 5, or 8, DTCs  P0202, P0203, P0205, P0208 will set, along with DTC P1262.

Conditions for Running the DTC•The ignition is ON.
•DTC U1800, or U2104 are not set.
Conditions for Setting the DTCThe ECM detects a circuit fault related to the high voltage circuit to cylinders 2, 3, 5, and 8.

Action Taken When the DTC Sets•The control module illuminates the malfunction indicator lamp (MIL) when the diagnostic runs and fails.
•The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Freeze Frame/Failure Records.
Conditions for Clearing the MIL/DTC•The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
•A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
•A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
•Clear the MIL and the DTC with a scan tool.
Test DescriptionThe number below refers to the step number on the diagnostic table.

2.This step determines if a wiring or injector problem caused this DTC to set. If DTC P1262 sets alone, an internal FICM fault is the cause.
DTC P1262 Step
Action
Yes
No

Schematic Reference: Engine Controls Schematics

Connector End View Reference: Engine Control Module Connector End Views or Engine Controls Connector End Views

1
Did you perform the Diagnostic System Check–Engine Controls?
Go to Step 2
Go to Diagnostic System Check - Engine Controls

2
Is DTCs P0202, P0203, P0205, or P0208 also set?
Go to DTC P0201, P0202, P0203, P0204, P0205, P0206, P0207, or P0208
Go to Step 3

3
Replace the FICM. Refer to Fuel Injector Control Module Replacement.

Did you complete the replacement?
Go to Step 4


4
 1. Clear the DTCs with a scan tool.
 2. Turn OFF the ignition for 30 seconds.
 3. Start the engine.
 4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.
Did the DTC fail this ignition?
Go to Step 2
Go to Step 5

5
Observe the Capture Info with a scan tool.

Are there any DTCs that have not been diagnosed?
Go to Diagnostic Trouble Code (DTC) List
System OK
 

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Discussion Starter · #4 ·
Don't know what you mean by a Vin 1 motor. It's a 2003 california LB7.

I fixed the wire up and it seems to be running well now. I also noticed the large connector for the computer (drivers side on top of motor) had 2 pins that were pushed in. I also pulled them out till they clicked.

Thanks for the replies!
 

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Don't know what you mean by a Vin 1 motor. It's a 2003 california LB7[ /QUOTE]

DURAMAX VIN CHART
Model Year(s)
8th Digit of VIN
Duramax Model & Notes
2001 - 2004
1
LB7
2
LLY (introduced midyear 2004)
2005
2
LLY (only engine offered for 2005)
2006
2
LLY (2006 version, different from 2005 version)
D
LBZ (introduced late 2006)
2007
D
LBZ
6
LMM
2008 - 2010
6
LMM (only Duramax offered during these years)
2011 - Current
8
LML
L
LGH
 

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Discussion Starter · #7 ·
Yes the 8th number is a 1
 
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