Compression Ignition Addict
Join Date: Jan 2013
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Bunch of codes from dealer - Plz help diagnose!
I bought a used 6.0 with 90k miles on it about 6 months ago. I've only put about 5k miles on it since then because it was stolen the 2nd week I had it, then recovered a couple weeks later. It sat in insurance purgatory for a while, but I've been driving it for about the past month.
Mechanically, the motor seemed fine to me. No dash lights. I have an Edge Insight and my temps are all in check. Mechanically, the truck is 100% stock. I had a remote starter/alarm put in, and sometimes the remote start fails to get the engine to fire, so I suspected it might have a minor injection or ignition issue, or maybe just needed new batteries.
So I took the truck to a Ford dealer to do the heated transmission fluid change and to do my state safety inspection. In the process, they pulled 6 DTC's from the PCM.
The first is a P0611. This seems to be a common FICM failure. From what I'm reading, the soldier on the voltage amps and some of the larger resistors on the circuit board seems to not be able to handle the heat. Reflowing the soldier might clear it up. Otherwise, a pricey replacement might be in order. Does that pretty sum up the P0611 code? Is it normal for a truck to have this code and still run fine without any CELs?
Then I got a few transmission-related lights:
P1876 - Transfer case 2-weel drive solenoid circuit open or short to ground
P1832 - Transmission transfer case 4wd solenoid circuit failure
P1808 - 4wd low indicator circuit failure
P1804 - 4wd high indicator circuit failure
I'm wondering if these are all related. I've kept the truck in 2wd drive mode since I've been using it, but I have verified that 4wd high and low both operate. Is there a common module involved here that might be going bad?
The last code is just a U1900 CAN bus fault receiver error. In most other cars I've worked on, this sometimes gets triggered when disconnecting the battery or when the battery dies. Same deal here, or is this actually a concern in these trucks?
The tech also mentioned something about a misfire in cyl 6, but I wasn't given any codes to indicate that. They're suggesting a new FICM, as well as new injectors and plugs. Does that seem appropriate?
If I were to use this as an opportunity to upgrade anything, any low hanging fruit here?