Code P2096?

VKAPUR88

MEMBER
2014 MITSUBISHI OUTLANDER
4WD
AUTOMATIC
150,000 MILES

My car failed inspection for error code P2096. I had the exhaust repaired, muffler changed, no vacuum leaks, O2 sensors replaced (with Mitsubishi parts), and threw Cataclean in there. Check engine light turns off when I fill up on gas, back on at half tank. Code is always stored in the permanent memory. Acceleration has been sluggish, but the car runs well. 3 mechanics told me catalytic converter looks fine and exhaust reading in range. What else could be causing this? I'm about ready to trade my car in it's so frustrating.

2 Replies

JACOBANDNICKOLAS

MECHANIC
109,874 POSTS

Hi,

I'm not sure which engine you have. So, I'm looking at information related to a 2.4L.

As far as the code is concerned, it indicates a lean fuel mixture. Have you checked fuel pressure when the fuel level is below 1/2 tank? Also, how did you check for a vacuum leak? Here is a link that explains how it's done. Let me know if this is what was performed.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

Also, if you haven't checked fuel pressure, I recommend doing it. Here is a link that explains how it's done:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Note: A lean fuel mixture code isn't indicative of a failing oxygen sensor. Usually, it is a vacuum leak or low fuel pressure. I attached the manufacturer's fuel pressure specifications below for you.

One other thought. If you have access to a live data scan tool, let me know what the short-term fuel trims are. Also, confirm the engine size for me.

Take care,

Joe

See pic below .

Image (Click to make bigger)