Posts Tagged: System too lean

P0174 code — The most likely causes and fixes

Learn what a P0174 code means and the most likely causes The definition of a P0174 code is System Too Lean (Bank 2). Bank 2 is the bank of cylinder that does NOT contain cylinder #1. In this case, the oxygen sensor upstream from the catalytic converter is sensing a lean condition. Here’s a list of the most common causes of a lean condition In simple terms, it’s caused by too little fuel or too much air. Here The following are some of the most common causes of this P0174 … Read More