Audi A5 P2276: B2S3 O2 Sensor Stuck Lean
P2276 is a general diagnostic trouble code. It means that your Audi A5’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, but … Read more