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Trouble Codes
P Codes (Powertrain)
P0400 - P0499
P0420
P CODES (POWERTRAIN) P0400 - P0499 P0420
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2000 Saab 9-5 Engine Code P0420
The Engine Light Comes On And I Get A Fault Code P0420. It Seems To Happen More Often In The Warmer Weatherand In Sport Mode. The Engine Has...
Asked by
tcmatteson
·
1 ANSWER
2000
SAAB 9-5
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
1999 Dodge Intrepid P0420
What Causes The Check Enlight To Come On And Show Error Code P0420? What Do You Have To Do To Repair It?
Asked by
skipper1551
·
1 ANSWER
1999
DODGE INTREPID
Check Engine Codes
Coming Home Today, The Check Engine Light Came On. Took To Auto Parts Store And Put Code Reader To It. Came Up Code P0420. What Does This...
Asked by
Corey H Jenkins
·
13 ANSWERS
1996
CHEVROLET TAHOE
P0420 Code Repair?
How Do I Repair A Code From My Obd-2 /code 420 Catalyst System Efficiency Below Threshold ( Bank 1). Spark Plug, Sensor, Or Is It My Cat...
Asked by
Johnny G
·
3 ANSWERS
2006
FORD EXPEDITION
Code PO420
I Am Stumped, I Used A Scanner To Read The Code And Then Erased It Two Days Ago. I Figured It Would Come Back Since It Is Low Catalyst...
Asked by
riebe123
·
3 ANSWERS
2000
HONDA ACCORD
2002 Toyota Camry Code P0420
Engine Performance Problem 2002 Toyota Camry 4 Cylinder Two Wheel Drive Automatic 94,000 Miles. My Car Was Running Good I Went To Good...
Asked by
shah camary 2002
·
2 ANSWERS
2002
TOYOTA CAMRY
1998 Acura CL Code P0420
The Code For Catalyst Efficiency Below Threshold Bank 1 Showed Up When I Purchased The Car And I Gave It Back To The Dealer And They Must...
Asked by
luis48
·
2 ANSWERS
1998
ACURA CL
2007 Nissan Maxima P0420 Code
Engine Light Came On Took To Dealer Said It Was Rear Catalytic Converter And Now Engine Is Back On And They Said It Might Be The Front One...
Asked by
shanareed4
·
2 ANSWERS
2007
NISSAN MAXIMA
2004 Cadillac P0420 Code
"catalyst System Efficiency Below Threshold (bank 1)". Is This Something I Can Repair Myself? I Have Already Changed Out All Sensors...
Asked by
pmaspks
·
2 ANSWERS
2004
CADILLAC DEVILLE
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