HOME
ASK A QUESTION
REPAIR GUIDES
BECOME A MEMBER
LOG IN
Login with Facebook
OR
Remember me
NOT A MEMBER?
FORGOT PASSWORD?
CONTACT US
PRIVACY POLICY
TERMS AND CONDITIONS
☰
Home
Honda
All
Trouble Codes
P Codes (Powertrain)
P0400 - P0499
P0420
HONDA P CODES (POWERTRAIN) P0400 - P0499 P0420
Select Make
All Makes
Acura
Alfa Romeo
AMC
Aston Martin
Audi
Bentley
BMW
Buick
Cadillac
Chevrolet
Chrysler
Citroen
Daewoo
Daihatsu
Datsun
Dodge
Eagle
Ferrari
Fiat
Fisker
Ford
Geo
GMC
Holden
Honda
Hummer
Hyundai
Infiniti
International
Isuzu
Jaguar
Jeep
Kia
Lancia
Land Rover
Lexus
Lincoln
Mazda
Mercedes Benz
Mercury
Merkur
MG
Mini
Mitsubishi
Nissan
Oldsmobile
Opel
Peugeot
Plymouth
Pontiac
Porsche
Proton
Ram
Renault
Rolls Royce
Rover
SAAB
Saturn
Scion
SEAT
Skoda
Smart
Subaru
Suzuki
Tesla
Toyota
Triumph
Vauxhall
Volkswagen
Volvo
Select Model
All Models
Accord
Accord Hybrid
Ascot
Ballade
City
Civic
Civic Hybrid
Clarity Electric
Clarity Hybrid
Concerto
Crosstour
CRV
CRX
CRZ Hybrid
Del Sol
Domani
Element
Fit
Fit Electric
Fit Hybrid
HRV
Insight
Insight Hybrid
Inspire
Jazz
Logo
Luxline
Odyssey
Passport
Pilot
Prelude
Rafaga
Ridgeline
Rover
S2000
Saber
Shuttle
Stream
Torneo
Wagovan
Found 12 results
Code PO420
When First Starting Up It Sounds Like A Tiger Growling. Sometimes The Rpm's Race.
Asked by
tornado33
·
1 ANSWER
13 IMAGES
2006
HONDA CIVIC HYBRID
VIDEO
Code Read Retrieval/Clear Honda
Instructional repair video
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...
Passed My Smog Test, And Soon After Code P0420...
Passed My Smog Test, And Soon After The P0420 Displayed, Took It To Dealership And They Said There Is No Problem With Cat Converter And...
Asked by
Simon.Says
·
5 ANSWERS
3 IMAGES
2010
HONDA ACCORD
1999 Honda Accord MIL Code P0420
I Have A Problem With The Same Code (p0420) Coming Back. I Own A Actron Auto Scanner Model Cp9180. I Look The Code Up And I Get Catalyst...
Asked by
rgo82
·
3 ANSWERS
1999
HONDA ACCORD
P0420 Code
What Sensor Do I Have To Replace With P0420 Code My Car
Asked by
palero
·
5 ANSWERS
1 IMAGE
2002
HONDA CRV
VIDEO
Is it Safe to Drive Check Engine Light?
Instructional repair video
1998 Honda Civic OBDII Code P0420
I Recently Replaced The Radiator, Hoses, Thermostat, Plugs, And Wires. Car Was Ran A Few Times With Misfiring Plug, Now I Get The Cel...
Asked by
seatazzz
·
7 ANSWERS
1998
HONDA CIVIC
Van Shakes Going Over Fifty Mph, Code P0420
My Minivan Shakes When On The Freeway Going Over Fifty Mph. If I Take Foot Off The Accelerator The Shaking/vibration Stops And Engine Runs...
Asked by
Jyspirit
·
3 ANSWERS
2005
HONDA ODYSSEY
GUIDE
Check Engine Light Safe to Drive?
We are a team of ASE certified mechanics that have created this guide to help you understand if your car is safe to drive with the check engine or service engine soon...
2005 Honda Accord P0420
I Have A Check Engine Light And Got P0420. I Know It Needs A Catalytic Converter But I'm Not Entirely Sure Sure Which One. It Just Says Bank...
Asked by
Ed-Weezy21
·
3 ANSWERS
2005
HONDA ACCORD
1998 Honda Civic P0420 Code
My Car Is Running A P0420 Code. My Exhaust Manifold Clearly Has A Crack Between The Manifold Gasket And The 1st O2 Sensor. Is It Possible...
Asked by
ajgary
·
1 ANSWER
1998
HONDA CIVIC
Code P0420?
A Couple Of Days Ago My Check Engine Light Came On. Plugged A Scanner In And Got P0420, But That Was It, No Other Info. Google Says...
Asked by
twebb101
·
3 ANSWERS
2008
HONDA ACCORD
Troule Code P0420
1997 Honda Civic 100040 Mileages. My Check Engine Light Was On. The Diagnostic Trouble Code Is P0420 Catalyst System Efficiency Below...
Asked by
veveya
·
1 ANSWER
HONDA CIVIC
PREV
1
2
NEXT
Ask a new Honda question
Sponsored links
Ask a Car Question. It's Free!
SPONSORED LINKS
Online car repair manuals
