cheap OBD scanner ruined my computer? Help!

Why are you screwed are there some pictures we need to see if your dash now that this has happened. When you plugged in the scanner from Amazon into the OBD2 port below your leg there above your leg rather what happens now how do you know something screwed up Is there a bunch of lights flickering Is there a digital light show? How do you know or think the whole system is screwed up? And now that it's been almost 8 or 10 hours does it still do the same thing?

 

Yes, a picture of whatever the dash is doing would help.

In my own experience, plugging something ill-behaved into the diag port might lead to a bunch of communication errors (reported as Uxxxx codes), but the errors stop when you've unplugged the offending gadget, and even if you don't clear the resulting codes, they may go away on their own after a few power cycles with no errors.

 

Did it clear .?

 

eh......disconnect 12v battery for 5 minutes.
Verify it's good if you have a battery tester or charge it up if needed..
Reconnect it, put your foot on brake pedal and press power button. Keep foot on brake, wait 10 seconds and press power button again.

 

I don't see any attachment to post #1.

In my experience, the bad comm traffic ceased when the gadget creating it was removed, but the resulting comm error codes were a different story, and didn't vanish immediately.

At any rate, if you've still got errors being reported, it'll become necessary to find out what codes they are. At the risk of re-traumatizing you, the way to read those is ... by plugging in a (working!) OBD scanner.

 

This is the dreaded p-lock malfunction. This is actually common for people with weak 12v battery. My guess is when you used your OBD with the car on, it drained your bad-battery even more. Hence why you’re experiencing the p-lock.

 

I did the e-brake neutral trick to get it to start when this happened to me. I got it from this thread P LOCK MALFUNCTION WHILE PARKING | PriusChat

Try the steps in the thread and see if it works for you. I’ve also seen other people pump their brakes multiple times til the actuator comes on. Some had a bad fuse. But the most common is an old-weak 12v battery. Good luck.