Check engine light on and codes P1166, P1167 and P0325 come up when I scan. I know P1166 and P1167 may mean I need to replace the oxygen sensors, correct? How easy are those to replace? And P0325 means I might need to replace the knock sensor, right? (which I wouldn't replace myself). Is it safe to drive with these issues?

 

welcome to the forum. you can change a oxygen sensor if you have the proper tools and a Honda sensor. if you use an aftermarket, it may fail in a week to a month. the knock sensor can be changed if you have mechanical abilities and a service manual.

 

P1166 and P1167 means there is an issue with the heater circuit of O2 sensor 1
It could be the sensor's heaters are faulty
Or it could mean that the wiring is faulty
Or it could mean there is a power and/or ground issue

P0325 is the knock sensor which has similar meaning
Part or the circuit has issues

Do some testing before replacing parts