Is your Tac acting up as well?

Mine (and granted its an 01) would lite up the TCS OFF light and the SES light and the Tac would drop to 0, but the car would continue to run just fine. Shut it off and everything was back to normal.

It ended up being the Crank Position Sensor.

Let us know what you find with the ABS...I too really think its probably a wheel sensor, especially since you didn't mention anything about the Tac.

webracin