I have a 05 dodge magnum se 2.7L and my engine light came on DTC p0141 , which is a 02 oxygen sensor bank 1/2 SENSOR . Heated performance... I change the sensor and erase the code but after two cycles the light came on again. So I check the wiring harness from the pcm to the sensor conector and all the wires are good , the only problem that I fund is when i check the pcm pin conector #1 pin #9 wich is the heater contror from the oxygen sensor 1/2 . It doesn't sent any voltage at all . So I don't know if some body, got any idea what else i should check before I buy a new pcm . Cause the are quite expensive and .and i wonder if it is something easy to repair, so I will appreciate the help if somebody know some about this topic.. thanks