02 sensor?
#1
02 sensor?
It kinda sucks that my very first post on this forum starts with a problem. Its still great to become a member of the forum! I just got my car off the truck from pennsylvania after its been sitting for almost 2 months, and its got a check engine light on. Codes are P0030 heater circuit, 02 sensor ckt no activity and the second one is h025 bank 1 sen 1. (I could of wrote them down in a wrong order) I'm assuming that they are both caused by the the bad 02 sensor. Bank 1 sen 1 should be an 02 sensor before catalyc converter, right? Also since the code read 02 sensor ckt no activity, could that mean that maybe 02 sensor is not bad but there's no connection. Any input would be highly appreciated. The car is 2003 a6 2.7t with 66k on the clock.
#2
RE: 02 sensor?
its the first o2 sensor bank 1 not the one near the cat check wiring for short if none change the sensor but clear the code first then do a run and see if the code comes back because it could be the system isn't up to normal working temp
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