I bought my first Porsche a couple months ago, an '02 996tt

Within a minute or so of driving it will throw up a ABS light and a PSM light, sometimes it will also throw the check engine light.

I ran the durametric and came up with the following.

4206 Front Left Speed Sensor - Signal Implausible
5525 Incorrect data transfer with DME master control unit

I also got P0103 Porsche fault code 115 - Hot film MAF sensor

When I bought the car the seller told me something about a cable needing to be replaced it had come off or something in the front left wheel connecting to the brakes, he said it was a simple fix but he never ordered the cable/sensor. I am no longer in communication with him and never got a good answer when questioning it.

This weekend I can pull the car out and take the wheel off but have no idea what I would be looking for.

Last week I took the MAF out and sprayed it down with MAF cleaner but looks like I still might have an issue with P0103?

Thanks