Abs fault but no code

[ColinEhm1]

Fiat grande punto 1.2 active

Abs light on but no fault code showing when machine plugged in, disconnected the battery light went out started driving came back on.

What can cause this fault with no code showing ?

 

[homeward]

Abs light on but no fault code showing when machine plugged in, disconnected the battery light went out started driving came back on.

What can cause this fault with no code showing ?

What "machine" are you using to try and read the code...?

Most (inexpensive) handheld machines will only read engine faults, I'm afraid. You will need a copy of (something like) multiecuscan (MES) with the appropriate (ELM/KKL/VAG, etc.) USB-to-OBD cable for your car; plus the ABS adapter lead (red, I think -- but I haven't had my first coffee of the day, yet... -- but it's worth buying the full set of three adapter leads, anyway...) to read and reset ABS codes.

I shall ask a moderator to move this to the GP section -- you'll probably get more appropriate responses, that way.

BTW: if none of this makes sense, feel free to ask... -- there are no stupid questions -- but I, personally, am capable of giving the odd stupid answer....

 

[varesecrazy]

MES , is the best relatively cheap option for code reading / daignosis , and clearing
think it's the GREEN lead for ABS, Yellow for PAS-a scan of EBAY will soon let you know

RED is Airbag,

before spending ANY money though check the FAQ's + stuff in the GP section , as quite a few of these things are down to fusebox / earth issues,

charlie

 

[Andy Monty]

check wiring from abs pump to abs wheel sensors for high risistance a lot of front N/S and D/s let water in and rot the wire / plugs as above MES will point you right

 

[portland_bill]

When ignition turned on, system does a self-test. If all ok, light goes out. Therefore valves and pump working ok.
If light comes on while moving, this suggests a wheel sensor fault. Check as above, Reasonably cheap and simple to fix.