Test Your Lean P0171 / P0174 Diagnostic Skills-Pt7

Here I search for evidence of substituted values causing no B2 LTFT reaction in enhanced parameter mode on my AutoTap scantool. Also, I validate that the O2 sensor traces on my scantool are not "substituted values" and are indeed bank specific and accurately communicating and reporting to the PCM. I messed up though by not knowing at the time that some of the variables I introduced force the system into Open Loop. This series is continued here:    • P0171 Case Study from Hell 2000 Trans Am Pt1