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I have a Cadillac DeVille 2001 with trouble code P0174 system too lean bank 2 don't know what the issue is on my car runs perfectly no issues at all no signs of troubles

Vehicle: 2001 Cadillac DeVille

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HI there,

Normally when the code is for only one side of the engine it's due to the front O2 sensor failing. If this is reading wrong, then it can cause a lean mixture on just one bank. Usually when this happens you won't notice any running problems
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P0174 CADILLAC Code - Fuel Trim System Lean Bank 2
Read more: https://www.autocodes.com/p0174_cadillac.html

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