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Lincoln fault code

Code u1900 abs can comm bus fault

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  • ollie11476 Dec 14, 2008

    u1900 abs can comm bus fault

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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

  • 21 Answers

SOURCE: 2006 lincoln town car

Did the dealer clear the codes last time you were in. they have to be cleared

Posted on Aug 27, 2008

reisdos
  • 1297 Answers

SOURCE: LINCOLN CODE READ ON SNAP-ON SCANNER. U1262

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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On my 05 Ford mustang v6, my fan only comes on when i turn my AC on and makes a funny noise when I turn the AC on, diagnostic test gave me a code, u1900, what does this mean and how do I fix it?


Where did you pull this code from ? What type scan tool did you use ,or was it a code reader ? Do you know about data communication networks on modern cars ? A U codes indicate a communication problem on the data network .
U1900 CAN Communication Bus Fault-Receive Error Audio Control Module REFER to Section 418-00 . U1900 CAN Communication Bus Fault-Receive Error ABS Module REFER to Section 418-00 . U1900 CAN Communication Bus Fault-Receive Error Instrument Cluster REFER to Section 418-00 . U1900 CAN Communication Bus Fault-Receive Error SJB REFER to Section 418-00 . The thing that would make this easier to diagnose would be to have a factory scan tool or a professional grade . Need to know what modules can communicate with scan tool .Honestly ,Don't think you can fix this . Dealer or ASE certified repair shop .Do you know what C.A.N. - controller area network is ? The vehicle has 3 module communications networks:
  • high speed controller area network (CAN)
  • medium speed CAN
  • international standards organization (ISO) 9141 communications network
The diagnostic tool connects to the communications networks through the data link connector (DLC). The DLC allows a diagnostic tool access to diagnose and test the vehicle systems of any module on the communications networks.
All 3 communications networks are connected to the DLC. This makes diagnosis and testing of these systems easier by allowing one diagnostic tool to be able to diagnose and control any module on the 3 communications networks from one common connector. The DLC can be found under the instrument panel between the steering column and the driver door. Which module doesn't communicate with scan tool ?
Symptom Chart Condition Possible Sources Action
  • The anti-lock brake system (ABS) module does not respond to the diagnostic tool
  • Circuit or connection in the high speed controller area network (CAN)
  • ABS module
  • Go To Pinpoint Test A .
  • The audio unit does not respond to the diagnostic tool
  • Circuit or connection in the medium speed controller area network (CAN)
  • Audio unit
  • Go To Pinpoint Test B .
  • Circuit or connection in the medium speed controller area network (CAN)
  • Audio unit
  • Go To Pinpoint Test B .
  • The instrument cluster does not respond to the diagnostic tool - high speed controller area network (CAN)
  • Circuit or connection in the high speed CAN
  • Instrument cluster
  • Go To Pinpoint Test C .
  • The instrument cluster does not respond to the diagnostic tool - medium speed controller area network (CAN)
  • Circuit or connection in the medium speed CAN
  • Instrument cluster
  • Go To Pinpoint Test D .
  • The powertrain control module (PCM) does not respond to the diagnostic tool
  • Circuit or connection in the high speed controller area network (CAN)
  • PCM
  • Go To Pinpoint Test E .
  • The restraint control module (RCM) does not respond to the diagnostic tool
  • Circuit or connection in the international standards organization (ISO) 9141 communications network
  • RCM
  • Go To Pinpoint Test I .
  • The smart junction box (SJB) does not respond to the diagnostic tool
  • Circuit or connection in the medium speed controller area network (CAN)
  • SJB
  • Go To Pinpoint Test F .
  • No high speed controller area network (CAN) communication
  • Circuit or connection in the high speed CAN
  • High speed CAN modules
  • Go To Pinpoint Test G .
  • No medium speed controller area network (CAN) communication
  • Circuit or connection in the medium speed CAN
  • Medium speed CAN modules
  • Go To Pinpoint Test H .
  • No international standards organization (ISO) 9141 communications network communication
  • Circuit or connection in the ISO 9141 communications network circuit
  • Restraint control module (RCM)
  • Go To Pinpoint Test I .
  • No module/network communication - no power to the diagnostic tool
  • Data link connector (DLC) C251
  • Bussed electrical center (BEC) fuse 4 (30A)
  • Smart junction box (SJB) fuse 8 (10A)
  • Circuitry
  • Diagnostic tool
  • Go To Pinpoint Test J .

Apr 11, 2016 | Ford Cars & Trucks

1 Answer

Check engine light is on and diagnatics show the error codes, P0722 and U2108


Definition of Diagnostic Trouble Code U2108 Buick: CAN Bus Error ABS Cadillac: CAN Bus Error ABS Chevrolet: CAN Bus Error ABS GMC: CAN Bus Error ABS Oldsmobile: CAN Bus Error ABS Pontiac: CAN Bus Error ABS Saturn: CAN Bus Error ABS


Definition of Diagnostic Trouble Code P0722 Category: Powertrain Definition: Output Speed Sensor Circuit No SignalNote: This definition of P0722 is applied to all manufacturers

Jun 27, 2015 | Cars & Trucks

1 Answer

Obd code U1900


U1900 CAN Communication Bus Fault

Mar 14, 2015 | Cars & Trucks

1 Answer

Fuel pump wont run on scaner no comm. memery codes cvs/vsmscp data fault for j1850 bus car run turned off wont start


First check all pcm fuses and ignition fuses. Pull them and put them back in if they are good. then check the grounds for the ECM. Then check the data wires to the ECM. Volt/Ohm meter is needed

Nov 07, 2014 | 2001 Mercury Cougar

1 Answer

LINCOLN CODE READ ON SNAP-ON SCANNER. U1262


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

May 20, 2010 | 2003 Lincoln Town Car

1 Answer

I have a ford explore 4wd v-6 engine. i had a diagnostic test done and the codes are U1900, B2900 and U2023. The mechanic didn't tell me what they meant. Told me I need to replace my battery for $200.00,...


U1900 - is a continuous code = C.A.N. communication bus fault - receive error

B2900 - can't find

U2023 - can't find

none of these are powertrain codes. if you have no symptoms, clear codes and drive car. I think you can clear by disconnecting battery for 2 hours. then drive for 10 miles to relearn. may run rough for 10 miles.

Jan 08, 2010 | 2004 Ford Explorer

1 Answer

What does C1175,C1236 and U1900 mean?


Hi,
For
C1175 - Speed Wheel Sensor LR Input Circuit Failure C1236 - Speed Wheel LR Input Signal Missing U1900 - Communication bus fault
If the cluster is working fine, ignore U1900.
There are so many recalls and so many technical bulletin for the problems on Ford 350.
Let me know, if needed further assistance.
Hope i helped you.
Thanks for using ' Fixya ' and have a nice day!!

Nov 04, 2009 | 2006 Ford F 350 Super Duty

1 Answer

2006 lincoln town car


Did the dealer clear the codes last time you were in. they have to be cleared

Jul 28, 2008 | 2006 Lincoln Town Car

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