My 99 v70 AWD threw a p0013 code. There is some roaming of the idle upon start up but settles pretty quickly at about 1000rpm. Upon start up yesterday it was real rough and ran for only 10 seconds with sub 500 rpm and stalled. After two times of this scenario it started and did not stall. I am not getting an ETS light, so not sure it associated with the ETM. I have the replaced yellow sticker ETM. I have been told that the P0013 could be the cam position sensor or the oil control valve or solenoid. While driving I haven't had stalls or hesitation. I'm trying not to replace all these associated parts just to figure it out. Some input would be greatly appreciated!