Lots of dashboard warning lights came on at same time

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28-02-2019, 03:34 PM

Isymac

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Lots of dashboard warning lights came on at same time

I have a 2010 Ford Fiesta Zetec. My brake warning light, abs warning light, stability control warning light, engine malfunction warning light, and power steering warning light, all came on. My speedo stopped working and the display that tells me how much fuel I have, also stopped working. I was a bit of a distance from home, and was frightened to drive it. I found a garage nearby, and they plugged in the computer. The mechanic wrote down the diagnostics for me. They were UO121, UO141, UO415 and U2005.
I managed to drive the car home. It felt and sounded fine, but I think my steering felt heavy. Can any of you fine people advise please?

Last edited by Isymac; 28-02-2019 at 03:40 PM. Reason: Missed a vital piece of information

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28-02-2019, 03:36 PM

Isymac

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This is the diagnostics that the mechanic wrote down for me

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01-03-2019, 06:19 AM

oldford

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There's a problem with the can-bus. A lot of computers in your car use this can-bus to communicate with each other.
For instance: the ABS supplies the vehicle speed, which is used by the instrument cluster and the power train computer(s).

In your case the communication with both the ABS and the Power Train computer is lost.
That could be a wiring problem in one of the can-buses (there are several buses) or it could also be a defective computer which blocks one of the buses.
This is not something you can repair yourself, I'm afraid.