P1273 already replaced a/f sensor but light still on, how do I clear?

Question

2004 Infiniti Qx56, how do I reset the ecm on my truck?

Answer 1

HI there,

A code reader, or disconnecting the battery for 24 hours, will clear the code. With this code you need to clear the fuel trim as well and reset it to zero or the code will reappear even after sensor replacement. This is done with a scan tool or when you disconnect the battery for 24 hours.