SPONSORED LINKS

Check Engine Light After Replacing Everything (P0420, P0430)?

Tiny
DAILYDRIVERDAD
  • MEMBER
  • 2014 FORD EDGE
  • 3.5L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 168,000 MILES
I had a check engine light show (P0420, P0430) and had both my catalytic converters replaced. About a week after I had a blinking engine light (misfire cylinder 3 I think) and had all coils, spark plugs, and wires change. Two months after I got another misfire and the coil that caused it was replaced under warranty. Now my check engine light is on again (P0420, P0430) and I'm running out of things to replace! Would you recommend replacing the 02 sensors? I can do this myself and try to save some cash after all these expensive repairs. Thx!
SPONSORED LINKS
Wednesday, August 3rd, 2022 AT 10:34 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
When they replaced the catalytic converters were they new from the dealer or rebuilt? If they were not new tis should be the problem, you can try to replace the oxygen sensors, but we have had little luck with that being the problem. Here is the location of the secondary or monitor sensors in the diagrams below. Check out the diagrams (below). Please let us know what happens.
Images (Click to make bigger)
Thumb
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Wednesday, August 3rd, 2022 AT 5:00 PM

Please login or register to post a reply.

Related Check Engine Light Content

How to Read Codes
VIDEO
How to Read Codes
Instructional repair video
Check Engine Light
GUIDE
Check Engine Light
Why is my check engine or service engine soon turned on? In this guide we talk about what this is associated with this notorious light, what it is used for and what you...

Sponsored links