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Daryl, Shop Owner, Master Mechanic
Category: Buick
Satisfied Customers: 12547
Experience:  28 years experience, Master Mechanic
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2000 buick regal: service engine soon light keeps coming..spark plugs

Resolved Question:

2000 buick regal g s "service engine soon light" keeps coming on. I have replaced the 2 Oxygen sensors. Also I have replaced the spark plugs. The code reads "Right Bank Running Lean" Can you please advise... thank you
Submitted: 5 years ago.
Category: Buick
Expert:  Daryl replied 5 years ago.
This can be caused by several things, I would be sure the PCV valve is ok to start, other possible causes are the intake gaskets and Mass air flow sensor.
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