# O2 sensor **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [May 25, 2014, 6:25am UTC](https://community.cartalk.com/t/o2-sensor/85160 "2014-05-25T06:25:44Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![kjack](https://avatars.discourse-cdn.com/v4/letter/k/5daacb/32.png) [@kjack](https://community.cartalk.com/u/kjack)\ **Post date:** [May 25, 2014, 6:25am UTC](https://community.cartalk.com/t/o2-sensor/85160/1 "2014-05-25T06:25:44Z")
I have a Cadillac CTS 2003 v 6 3.2 Liter. I replaced the bank 2 sensor 2 but I’m still getting the codes P0058 and PO161. Is there anything I missed? Please help! Thank you! ---
**Author:** ![the\_same\_mountainbike](https://avatars.discourse-cdn.com/v4/letter/t/c89c15/32.png) [@the\_same\_mountainbike](https://community.cartalk.com/u/the_same_mountainbike)\ **Post date:** [May 25, 2014, 6:46am UTC](https://community.cartalk.com/t/o2-sensor/85160/2 "2014-05-25T06:46:42Z")
Sounds like the O2 sensor isn’t getting heater power. Are you any good with a multimeter? You’ll have to get a schematic and check voltages at the connector, as well as do a good visual of the connector plug. Often these kinds of problems are in the plug itself. You should be able to get a schematic from the dealer’s parts window if you ask nicely. They’re usually happy to print one for you. ---
**Author:** ![cigroller](https://avatars.discourse-cdn.com/v4/letter/c/c68b51/32.png) [@cigroller](https://community.cartalk.com/u/cigroller)\ **Post date:** [May 25, 2014, 7:03am UTC](https://community.cartalk.com/t/o2-sensor/85160/3 "2014-05-25T07:03:34Z")
Indeed - what mountainbike said. Codes can’t indicate problems with parts. They can only deal with problems in _circuits_ of which the part is only one aspect. Between the PCM (that “sees” the error) and the parts are all those darned wires. ---
**Author:** ![kjack](https://avatars.discourse-cdn.com/v4/letter/k/5daacb/32.png) [@kjack](https://community.cartalk.com/u/kjack)\ **Post date:** [May 25, 2014, 8:47am UTC](https://community.cartalk.com/t/o2-sensor/85160/4 "2014-05-25T08:47:03Z")
From kjack. Thank you for your help! The same mountain bike and cigroller