Question about 2005 Lincoln Navigator
Code u1900 abs can comm bus fault
SOURCE: am having prob with ford
Hello, One event I have found says this is a short in the wire that runs from the ECM to the Immobilizer. This was an overseas posting and the Immobilizer could be the Inertia sensor or the Antitheft system. On the vehicle I found, the wiring loom rubbed against the starter. So if you have any wiring looms running under the car, it could be a hot exhaust or Catalytic converter rubbing into it as well.
You can try Autozone, Oreillys, or Advance for a free scan. Their scanner may be successful as this problem may have developed more symptoms. The pullback is a significant indication as to what branch the problem stems from. It may also help for the mechanic to put the car on a lift and run it, then look for smoke.
There is not much to identify this problem on the internet. I hope my solution is very helpful in providing a direction to fix it. You can print this message and show it to Ford for reference.
Posted on May 03, 2011
bottom line is the U1262 is a communication failure between your scanner and a module
assuming you actually pulled the code from the PCM then you have lost communication with a different module like the ABS, DDM, LCM, RASM, HEC, PAM and any other module I can't think of right now
You need a detailed pinpoint test from a Ford service manual or aftermarket source like Alldata, Shop key or Mitchell on Demand
You could be dealing with over a 100 different test PER module
Obviously something we can't do on-line too easily
If you could at least identify which module you have lost communications with your dealer may, for a fee, copy the correct pinpoint test
Posted on May 20, 2010
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