P1124 HYUNDAI - tiburon and also p0136 p0301 ...can you help me to anderstand?

Question

my car is a tiburon 2001 and i have those code p0301 p1124 and p0136
and a blinking light engin now before since a while only the p0136 and EL was ON but no flashing...I check the O2 sensor but ? and my car consumption was always around
7.5 L/100kms so like used to....
can you help me if it a new problem or the same but worst?
tyou

Answer 1

P1124  TPS out of self test range

P0136   02 sensor bank1 sensor 2 circuit malfunction

P0301 Misfire number 1 cylinder, The reason for the flashing check engine light is misfire on the number 1 cylinder, When the misfire occurs the ECM will shut of injector also (in order to protect the catalytic),When you are dealing with a misfire the rear 02 sensor monitor the catalytic as a lean threshold. Fix the P0301,this is a misfire from either a sparkplug,sparkplug wires, injector,injector harness, to low compression, Satisfy and resolve the misfire first, it will always go worst