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A couple of weeks ago I was reversing out of a parking spot and put osf wheel up a kerb onto a piece of grass. About half a mile later abs and tc lights came on the off over about an hours time, when switching off the warning traction failure showed up on the dash. Nanocom shows no faults, can’t feel any play in any wheel bearings not sure what to try next.

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If you've got, or had, an ABS fault, Traction Failure will come up on the dash when you switch off. Is it still doing it or has it now gone away? Chances are the ABS sensor on one wheel has moved and a light tap with a mallet to push it back in will be all that you need do. If it was a failed sensor, it would be detected during the self test when you first switch the ignition on and would also store a fault that the Nano could read.

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I’ve only just run engine to get oil and water levels correct after doing work on it, I know abs light will not go out till I take it for a run, but tc is still lit and traction failure on dash when ign turned off. Is it worth monitoring nanocom to see if voltage to abs sensors changes when driven?. Might be in two weeks as away on Monday.
Thanks Richard

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Yes, check the voltage, or wheel speed, with the Nanocom. They should all read exactly the same and as you start to creep forward, they should all start giving the same output at the same time. I've seen one where one sensor was sluggish and was slow to start giving an output which was showing the same fault as you have. A tap with a mallet was all that was needed.

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I have a similar fault, which started about a year ago. ABS Fault and in a few seconds, Traction failure fault on the message centre.
15 seconds after I start the engine, and the Brake light goes out, and without moving, I get the TRACTION FAILURE message.
Once I start to drive, and get over about 5mph, I get ABS FAULT message.
I have never found any error codes stored in Nano?
Like Gilbert, who I believe has a similar issue?, I have been a lazy sod and not really tried to fix it......
Oh, TC and ABS seem to work when I tried them on a dirt lot!
Any clue?

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That's right, I had similar on the Ascot, although it was giving a stored fault on the Nano. Fault was for one ABS sensor (RH Rear in my case) which when I tested it was open circuit. Changed that and everything back to normal. When the fault comes up as soon as you start the car and before moving, it is something failing the self test and, in most cases, it will be a faulty sensor, either open or short circuit.

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That's what I suspected as well, but no faults logged, and for the brief time it lets me look at live values as I speed up, all sensors are returning data????
I will dig into it further.
I have checked both front sensors with an ohm meter and they look ok. The plastic surrounding the pins crumbled however, so I need to get some weather pack connectors and replace them.
Will check rears when it dries out this weekend.