I’ve had this on a 2003 Nissan 350GT. The slip and TCS lights seem to be the light combo of choice for Nissan for any number of faults. It sounds like your ECU has gone into ‘limp home mode’ and you will need to get the error codes checked to pinpoint the issue.
Either connect an OBD scanning tool to the OBD port under the steering wheel (or take it to a garage) or if you don’t have a scanner you can try the Nissan ‘pedal dance’ which can be tricky to get the timing right but here is a link to it : https://www.nissanhelp.com/diy/common/nissan_engine_codes_read_2.php?
the error codes will then be flashed up by the Engine Check Light on the dash … once they’re flashing i find it useful to video the flashing sequence on my phone and then translate them afterwards.