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Just fixed front o2 sensor on my '00 V70, cleared CEL and now it's backwith P1672. Equusdescribes it as +5V power supply. Not sure if this means bad alternator or..?
I could definitely use some help as well. Just replaced the positive battery cable to the aux fuse box and still have P1671 as well as P1672. Gonna take a look at the cam shaft position sensor and vvt setup.