Codes p2096 and p0420

2015 FORD EDGE

74,000 MILES • 2.0L • 4 CYL • TURBO • 2WD • AUTOMATIC

WESLEYMOREY12

MEMBER
1 POST

Recently got a p2096 code on my fort edge 2.0 Ecoboost. I got it to reset and tonight I got it again. This time I got a p0420 code and p2096 code. I am thinking downstream O2 sensor, but before buying part want to make sure looking at correct thing, I read something about it possible purge valve. Also, where is the downstream O2 sensor located? I looked under car and couldn’t see it.

Jun 28, 2022 at 11:20 PM

SQM

✓ASE Certified Mechanic
6,383 POSTS

Hello,

The codes
P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
P2096 - Post Catalyst Fuel Trim System Too Lean Bank 1

These codes can get triggered due to a number of reasons. It could be faulty oxygen sensor, exhaust leak, leaking fuel injectors, faulty catalytic converter. It can also be due to wiring issues for the oxygen sensor.

https://www.2carpros.com/articles/repair-lean-mixture-codes-p0171-or-p0174-on-some-manufacturers

The downstream sensor is located on the upper part of the pipe. You will have to remove the driveshaft to access it.

I have attached the diagnostics for the codes below for your reference.
Also attached is the oxygen sensor replacement procedure.

Let me know of any questions.
Thank you.

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
Click here to log in and view diagram.

Jun 29, 2022 at 10:48 AM