Codes P0420 and P0430 | Ford Explorer Forums - Serious Explorations
  • Performance Upgrades - Maintenance - Modifications - Problem Solving - Off-Road - Street Trucks.
    Covering the Explorer, ST, Sport, Lincoln Aviator, Sport Trac,
    Mercury Mountaineer, Mazda Navajo, Ford Ranger, Mazda Pickups, and the Aerostar.
    Featuring H.I. - Human Intelligence.

    Register Today It's free!

Codes P0420 and P0430

9

9COOP5

Well-Known Member
Joined
September 7, 2015
Messages
145
Reaction score
5
City, State
Ohio
Year, Model & Trim Level
2002 Exp XLS
2014 Exp XLT
I am trying to figure out exactly what catalyst system efficiency bank 1 means. The codes are P0420 and P0430 for my ‘02 Explorer XLS.
 












Featured images

Featured image Featured image Featured image Featured image Featured image Featured image Featured image Featured image Featured image Featured image

Featured images

Featured image Featured image Featured image Featured image Featured image

Similar Threads

9
Catalytic converter cleaner
Replies
15
Views
7,278
regis101
R
M
Engine codes P0420 P0430
Replies
9
Views
12,463
AngeloVan
A
S
Multiple Codes
Replies
6
Views
1,548
sheltonfilms
S
N
Check Engine Light - What do these codes mean?
Replies
2
Views
1,788
jremington59
J
2
02' 4.6l P0420 code
Replies
6
Views
2,727
20EddieBauer02
2
0
Odd rumble only on first cold start acceleration
Replies
4
Views
2,231
003XLT
0
Back
Top