Posts Tagged: Bank 2 Sensor 1

P2197 Code Explained: The Real Causes Most Shops Miss

How Fuel Trim Data Solves P2197 Fast Quick Summary A P2197 code is defined as: O2 Sensor Signal Stuck Lean Bank 2 Sensor 1. The code means the engine computer is seeing a lean oxygen sensor signal that doesn’t change, even when operating conditions should force it to. In plain terms, the PCM believes the upstream oxygen sensor on Bank 2 is stuck reading lean. The sensor itself is often blamed, but if you rush to replace it without any other diagnostics, you could be wasting time and money. The … Read More