Rally Sport
Member
- Joined
- Jul 13, 2025
- Messages
- 81
- Reaction score
- 5
- Points
- 8
- Buick Ownership
- 2008 Buick lacrosse cx
If anyone has the code p0140 it could mean that the mass airflow sensor is bad or just needs cleaned or it could be a vacuum leak or a bad downstream 02 sensor it’s on a 08 Buick Lacrosse CX 3.8 I was lucky that the mass airflow sensor just needed cleaning.
