# 2012 Chevrolet Equinox - P2096

**URL:** <https://community.cartalk.com/t/2012-chevrolet-equinox-p2096/159410>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet, equinox\
**Created:** [February 24, 2020, 7:07pm UTC](https://community.cartalk.com/t/2012-chevrolet-equinox-p2096/159410 "2020-02-24T19:07:24Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![thebugman10\_163943](https://avatars.discourse-cdn.com/v4/letter/t/f9ae1b/32.png) [@thebugman10\_163943](https://community.cartalk.com/u/thebugman10_163943)\
**Post date:** [February 24, 2020, 7:07pm UTC](https://community.cartalk.com/t/2012-chevrolet-equinox-p2096/159410/1 "2020-02-24T19:07:24Z")

</div>

Hi all, I’m looking for help diagnosing the issue with my wife’s vehicle. It recently threw code P2096.

Some history of the car:

In the last 6 months I have replaced both O2 Sensors. In the last 12-18 months I have replaced the exhaust manifold.

Here is what I’m seeing with the OBDII scanner:

At idle, the upstream O2 sensor oscillates between about 0 - 0.7 V. The downstream O2 sensor oscillates between 0.3 - 0.8 V. Short term fuel trim oscillates between -10 - 10. MAF is reading about 3 g/s. Vacuum is reading about 20 in/Hg.

Accelerating to about 2500 RPM, the upstream O2 will be between 0.1 and 0.7 V, while the downstream is between 0.4 and 0.9 V. MAF is about 16 g/s. STFT is between -10 and 1.

After driving for a couple miles and then stopping, the upstream O2 stays about the same as it was while idling. But now the downstream O2 sensor is reading a constant 0.75 V, and the STFT is oscillating between -10 and -1.

From what I’ve read I suspect that it is the catalytic converter, given the oscillation of the downstream O2 sensor voltage. But I wanted to see if you guys had any other ideas about what might be going on.

Thanks for your help!

---

<div class="post-metadata">

**Author:** ![tcmichnorth](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tcmichnorth/32/25126_2.png) [@tcmichnorth](https://community.cartalk.com/u/tcmichnorth)\
**Post date:** [February 25, 2020, 10:26am UTC](https://community.cartalk.com/t/2012-chevrolet-equinox-p2096/159410/2 "2020-02-25T10:26:52Z")

</div>

[https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.obd-codes.com/p2096&ved=2ahUKEwjCvY6mvOznAhUKZc0KHc-ABUgQFjADegQIDBAU&usg=AOvVaw3yM8vYv2bIdIKh41PpQJEg](https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.obd-codes.com/p2096&ved=2ahUKEwjCvY6mvOznAhUKZc0KHc-ABUgQFjADegQIDBAU&usg=AOvVaw3yM8vYv2bIdIKh41PpQJEg)

This is a good read on P2096. Check and repair issues related to the code first. Then if necessary, deal with the catalytic converter.