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Oldsmobile
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Trouble Codes
P Codes (Powertrain)
P0400 - P0499
P0420
OLDSMOBILE P CODES (POWERTRAIN) P0400 - P0499 P0420
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Found 2 results
Po420 Code
I Had Random Misfire Code But I Fixed It By Replacing A Faulty Coil. I Have No Miss, But I Now Have A Po420 Code. Replaced Up And Down...
Asked by
Ronald Franklin
·
1 ANSWER
1999
OLDSMOBILE 88
VIDEO
Is it Safe to Drive Check Engine Light?
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...
Code P0420?
I Got The Error Code P0420, Catalyst System Efficiency Below Threshold Bank1. I Know That I Have A Possible Exhaust System Leak, But...
Asked by
craigak
·
15 ANSWERS
3 VIDEOS
5 IMAGES
2004
OLDSMOBILE BRAVADA
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