Codes P2096 and P0420

Tiny
WESLEYMOREY12
  • MEMBER
  • 2015 FORD EDGE
  • 2.0L
  • 4 CYL
  • TURBO
  • 2WD
  • AUTOMATIC
  • 74,000 MILES
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.
Tuesday, June 28th, 2022 AT 11:20 PM

1 Reply

Tiny
SQM
  • 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 make bigger)
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Thumb
Was this
answer
helpful?
Yes
No
Wednesday, June 29th, 2022 AT 10:48 AM

Please login or register to post a reply.