1997 Buick Century Q&A
1997 Buick Century Question: My Service Engine Soon will come on.
When I check the system with a scanner at my local mechanic the code that appears is PO420. This car has a 3.1 v6 with automatic transmission. If anyone has encountered the same problem please e-mail any suggestions to correct the problem. Thank you and may you have a Blessed Day. - lenova
P0420-catalyst below efficiency , have system (rear O2 sensor) monitored with scanner(NOT CODE READER!!!!!) to verify converter function. Clear code and see if it returns. - ziptie12
I was having a problem with the Service Engine Soon Light coming on and when the code was read it said there was a misfire on cylinder 1. I had all my plugs ad plug wires replaced but the code per...
I just passed 74000 miles and the service engine light has come on. The car is running good, any idea why the light has come on? Thank you, Jackie
I had my car in the shop about 7 weeks ago because my car, upon driving after braking, would make a high screeching sound and be hard to steer forward. No matter where I was, the only way to move ...
service engine soon light comes on (gas cap is tight), after 70 mph. Today, car started skipping..maybe firing on 5 cyls.Can I drive it (3 miles) to my servicing garage safely?