ECU Fault Codes?

[nickg123 0]

Hi guys.

My car was recently serviced this week but the lad doing it said he went to reset the computer as it was showing a service was needed, but he saw a couple of faults on the ECU?

I can't remember what he said they were, but he said he cleared them and will check it again after Christmas to see what it could be. He said one of them but i can't remember the name of the fault..

Is it likely to be anything serious? The car had devleoped a mis-fire, but new leads have cured that.

Could the fault have just been that problem?

[antera309 3]

Difficult to say without knowing what the fault codes were. It could be that the codes the mechanic cleared were just "old" ones, caused by a one-off event like your battery running flat. If they re-occur though, there's a problem that needs to be addressed.

[MrBen 0]

It could just be the old fault, but you would have thought having found some fault codes your mechanic would then have given the car a quick run to see if they immediately reoccurred!

[mk3anni 0]

As said it might be nothing. I checked the codes on a car at NR last month and found 4, cleared them, and checked it again 2 weeks later and they where all gone.

[FishWick 21]

Which ECU displayed faults, the engine or ABS ECU? Some fault codes linger until either reset or if the battery is disconnected. Anything serious would manifest themselves as poor running. Investing in VAG-COM would be a good idea to keep an eye on the ECUs.

[Eat this 2]

at rr day mine showed up a maf fault which vince cleared and said its prob been disconnected with the ignition on and the ecu stored the fault iv never had any obviuos trouble with it exept for knackered leads