I've had the TCS/SLIP lights on for a while now and if memory serves I have code 19? Can't really remember. About a year ago I had the ABS light coming on with them and I actually had an alternator voltage regulator failure. Testing system voltage showed voltages up to 19 volts! If you are getting all three lights I'd recommend checking the alternator out to make sure, that high voltage could really fry a lot of things. Once the new alternator was installed no more ABS light.
Prob. not really common but it's worth a simple voltage test to make sure, you wouldn't want to drive very far with a bad voltage regulator.
One cool thing about it was my power windows were super fast!