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Trouble Codes
P Codes (Powertrain)
P0400 - P0499
P0420
P CODES (POWERTRAIN) P0400 - P0499 P0420
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2003 Pontiac Vibe 2003 Vibe P0420 Code
Hey, Guys I Replaced The Trans. Bearings, Took Car For A Ride, The Engine Light Came On, I Pulled The Code P0420 Cat. Eff. Below Threshold...
Asked by
toy-8844
·
7 ANSWERS
2003
PONTIAC VIBE
Cannot Resolve Code P0420
Hi, I Have Been Battling This P0420 Code On My Car (gt Model) For A While Now And Was Hoping Someone Would Have Some More Insight On The...
Asked by
HVDES
·
11 ANSWERS
2005
PONTIAC GRAND PRIX
2000 Mazda Protege Code P0420
What Causes This Code And How To Diagnosis The Causes?
Asked by
zemorzemor
·
10 ANSWERS
2000
MAZDA PROTEGE
1999 Mazda Miata P0420 Code
The Catalytic Converter On My 99 Miata With 43k Miles Was Replaced A Month Ago. Last Week, The Check Engine Light Came On And I Pulled The...
Asked by
miataowner37377
·
6 ANSWERS
1999
MAZDA MIATA
Code P0420 How Do I Fix?
I Had A Tech Hook Up The Machine And He Gave Me This Code. P0420. He Said It Was Catalyst Or The O2 Sensor. Can U Help Me
Asked by
mike espinoza
·
6 ANSWERS
2004
CHEVROLET SILVERADO
2002 Nissan Altima TROUBLE CODE P0420
I Removed The Cat Converter, But There Seems To Me No Damage Visible. Please Advise
Asked by
PEPSI123
·
2 ANSWERS
2002
NISSAN ALTIMA
Codes P0302 Constant Misfire, P0420 Cat System Below...
I Bought My Car At An Auction So I Did Not Know Anything About It Or What It Had Been Through. So When I Picked It Up No Water In The...
Asked by
Mariah_parker
·
5 ANSWERS
2003
VOLKSWAGEN PASSAT
2004 Toyota Sienna P0420 MIL On
My Check Engine Light Comes Once Every Month. The Code Is P0420. Can I Test The Rear Cat By Checking The Inlet And Outlet Temp Of The...
Asked by
unic66
·
5 ANSWERS
2004
TOYOTA SIENNA
P0420 - Tried Everything!
P0420 Was On, Cats Were Replaced With Bosal California Approved Cats As Well As New Denso Sensors. Readiness Set, No Codes For Several...
Asked by
Amalthea
·
5 ANSWERS
2000
TOYOTA CAMRY
2000 Toyota Camry P0420
I Saw Several Messages Posted On This Issue And Wanted To Make Sure I Fully Understood What The Issue Is And The Steps To Correctly...
Asked by
Dolemite44149
·
5 ANSWERS
2000
TOYOTA CAMRY
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