Question about 2004 Ford Focus

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U1262 ford focus

U1262

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  • Milton S Lindner Jun 05, 2014

    Hi Adrian Prenga, I want to help you with your problem, but I need more information from you. Can you please add details in the comment box?

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CAN bus communications failure.

Posted on Mar 04, 2015

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Posted on Jan 02, 2017

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Apparently it's a bus communication fault.
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Please note the car is ia fiesta not focus( it is not listed in the listing) ford fiesta 1.4 petrol year 52 engine failure / rebuild head various dtc faults cleared ignition is coming on but car...


The code U1262 point out a communication fault between the vehicle modules and a scanner. It may be best to visit your local dealer to find if one of the vehicles control modules has failed. In some cases this can be as simple as a blown fuse, but there is always a reason for a fuse to blow
and a oil sending circuit fail. would need to be tested.
P1000 DTC code is a manufacturer specific trouble code. your code reader is not reading or communicating correctly you will need to check the fuses for all the modules and check the connections on the plugs and the units to check the modules to see if they have good contact. also check the main earth from the battery to the shell and make sure the contact is good.

Aug 04, 2017 | 2002 Ford SVT Focus

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

Focus code u1262 . how can i fix the problem?


I read on a different thread that had the same issue and their fix was replacing the battery. Have your battery checked. The code was given during cranking and starting of the engine.

http://www.fordmondeo.org/forum/showtopic.php?tid/798078/

Mar 18, 2010 | 2001 Ford Super Duty F 450

1 Answer

Duag code u1262, p0500 & p0720


Your codes are as follows:

U1262 communications bus fault
P0500 Vehicle Speed Sensor Malfunction
P0720 Output Speed Sensor Circuit Malfunction

What, if any, symptoms is your vehicle showing?

If your Vehicle Spped Sensor has gone bad, it can cause loss of anti-lock brakes, "anti-lock" or "brake" warning lamps on the dash, the speedometer or odometer may not work properly (or at all), your vehicle's RPM limiter may be decreased or automatic transmission shifting to be erratic.

Jan 19, 2009 | 2001 Ford Super Duty F 450

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