I have a 2004 Ford Explorer V8 4w drive. I have two problems that I'm trying to figure out, first problem is that my ABS light comes on, mainly when I quickly hit the gas while turning the wheel(such as passing a car). When I turn the truck off and back on, the light goes off, and stays off till the next time I pass a car or what ever.

Second problem is my cruise control, it sometimes works, and sometimes dosen't. I don't know why. One thing that I did notice is that if the cruise isn't working, it'll sometimes start working again after I bring the truck to a full stop.

I get a dtc code C1440 Preasure Transducer Main Primary Signal Faulted. Any suggestion on the problem and the fix



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Try changing the pressure switch on your Master Cylinder the part is only available trough a Ford Dealer part# 3L3Z-9F924-AB the part cost around $20.00 and takes about 2 minutes to change.

 

I know this is an old thread but I have a question. I have the same issue. What are the test procedures to make sure the switch is bad. I understand it is an easy fix but I don't want to throw away $30 if I need to put the money towards another part.

 

I know this thread is too old, but currently I am facing this issue. I have a Lincoln Aviator 2004 AWD, and trying to fix by myself. Is it possible for you to share picture of the part, which needs to be replaced.

Your replies are really amazing and it helps a lot. Thank you so much for that.

Appreciate your help.

Thanks,
P.S