Pontiac Grand Am P2276: B2S3 O2 Sensor Stuck Lean
P2276 is a general diagnostic trouble code. It means that your Pontiac Grand Am’s third (from the exhaust manifold) “bank 2” downstream oxygen sensor (behind the catalytic converter) is continuously sending voltage that indicates a lean air/fuel mixture. Having this code does not necessarily mean that the vehicle is running lean (although it can, … Read more