Hey All... I searched the forum and found some info but not an answer!!!

The ABS Light came on My Dash. A friend scanned it and said it was a C1145 Code and to replace the Sensor. I did! The light went off for about 5 miles and then came back on! I bought a scanner tool that reads ABS Codes and it read: C1145, C1234, U1900, and B2900. I erased the codes, drove it for about 5 miles, light came back on, returned home, scanned it and only have the first 2 'C' Codes now... Any ideas? A mechanic friend told me to replace the entire Hub Assembly. This is an expensive part, wanted more opinions before I proceeded... Thanks in Advance! 2006 F-250 6.0L Diesel 4x4

 

The way I read the code definition from AE is that it's a right front (RF) circuit failure (C1145) and RF input missing (C1234) which would be logical. Check for a wire fault, not a hub or sensor failure.

 

I will check the wires/connections and get back soon! Thanks... Also, Love Your Signature Thing (Federal Ownership Respectfully Declined!!!)

 

I get the Right Front Error every now and then.
I have cleaned the plug and put dielectric grease
on it. It still comes back every now and then.
Wiggle the plug and it goes away.

So I think what I have is a bad wire or pin
at the plug.

I have been told that you can replace the sensor
without replacing the whole hub assembly. What
I don't know is the part number for the right side
sensor. Maybe some one will post it for a 2006 4X4.

Thanks

Sean

 

I replaced Mine. (Still having the Problem Though!!!) It was close to $100.00 from the Stealership but I found it on Amazon for under $18.00 shipped! Here's the link...

 

It could be the back side plug and not the one on the sensor cable.

Short of disassembling the plug and that is something I will do next.
It can be hard to find a wiring fault.

Sean

 

You know, way back when I first started out in the trade, one of the very first lessons in college I was taught, was how to properly load test (or voltage drop test) circuits. Given that the OP has already done to easiest possibility, which is to replace the sensor and guessed wrong, the only other (and more likely possibility) is a "green deathed" wire(s). There's only two that run between the ABS module and the sensor. For what it's worth, the ABS wiring are all contained within the underhood harness, so it would be wise to follow them, until you reach the source of your issue. Personal experience when it comes to tracing wiring issues, has always ended up in an area where water can make it to very easily.

It's either that, or there's always what I like to call the black man's repair, which is black electrical tape over the offending warning light(s) if it bothers you that much. I guess this experience should more than prove that our job as a stealership technician isn't always as simple as "hooking up the majik masheen and it will tell us what's wrong with it" huh?

 

In my case I have already done the contact cleaner and dielectric grease.
The error I get is for an open circuit. Given that I have not replaced the
sensor and every time P play with that plug at the right side mud flap
it goes away. I am thinking that I may have a poor crimp on a pin
in that plug.
The first time I had problems the plug was just hanging out in space
the holding clip was not on the fender well the way it should be and
I put it back. Over time the wire may of gotten brittle form all the flexing
and/or a pin is bad like I said.

Oh well it gives me something to do.

Sean

 

Well... Still having the Problem... I Replaced the Sensor First and this did not fix it. I then replaced the Front Hub Assembly (And let me say what a Pain in the Butt that is if You don't have a thin but very strong pair of Snap Ring Pliers!!!) and that did not fix it either! Still getting the C1145 and C1234 Codes! So, I am guessing at this point it has to be either a bad wire somewhere or My ABS Unit is Bad???

 

You really love throwing expensive parts at your ride don't you? The fact that you are willing to shell out the astronomical cost of a front hub and bearing assembly now clearly illustrates that this problem obviously bothers you enough that you are willing to put a concerted effort into fixing it.
And I stand by my statement outlined in the paragraph above. I'll even go as far as TRY to simplify matters for you. There are TWO wires in the right/front wheel speed sensor circuit (which I'm sure you knew already). The wire colours in this particular instance are yellow with a red stripe, and yellow with a black stripe. There are NO connectors in between the main ABS module connector on the driver side of the engine compartment and the sensor on your right/front inner fender well. That said, if you follow the wiring, it will run through the harness where the blower motor, vacuum pump goes, right through the black plastic harness wrap and under the coolant degas bottle, to the battery junction box and then in turn, to the ABS module. I would think the first order of business is to disconnect both the ABS module connector, and then the ABS wheel speed sensor connector at the fender well. Now, using an ohm meter, check for continuity/open/high resistance on those two circuits to determine the circuit that has the issue. Once you identify the faulty circuit, then do your tracing and repair as needed. DO THIS BEFORE YOU REPLACE THE ABS MODULE.

 

Thanks Very Very Much for the Reply. I will Pull 'er in the Garage and Test it. I'll Post back after I do...

 

Me thinks your friend is a parts replacer...not a "mechanic". Two excellant trouble shooters (one a senior Ford MASTER technician) advised checking the wires, yet you replaced parts.

 

This scenario is one that I have seen THOUSANDS of times in my years of wrenching. Guys throw parts at problems BEFORE trying to pinpoint the source. For what it's worth, I have seen far more "green deathed" wires as the cause of I would say 90% of electrical issues, rather than component failure caused. I have said it hundreds of times to several guys, and I'll say here again for the world to see. IT IS FAR EASIER TO REPLACE PARTS THAN IT IS TO ACTUALLY TRACK THE CAUSE OF A PROBLEM.

 

Mike is there a connector between the controller and the right side?
I keep having a right side issue and I have cleaned and greased the
connector at the wheel end. It comes and goes.

Sean

 

NEGATIVE on that, according to the wiring diagram. Those two circuits for both front wheel speed sensors run directly from the main ABS connector to the wheel speed sensors directly without any connectors in between them. My suggestion would be to remove the right inner fender well, and unplug the A/C accumulator pressure switch, vacuum pump and the blower motor on the passenger side of the engine compartment and follow all the wiring by stripping the convolute. If there is any "green death" you will likely see it in that area. Failing that, continue to follow it through that hard plastic harness holder that secures it to the cowl and under the coolant degas bottle until you find the source of your issue.