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Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 2280 (Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid) - DTC P2006 - UXXXX) >> Diagnostic Trouble Code (DTC) Charts And Descriptions >> P2097 - Post Catalyst Fuel Trim System Too Rich (Bank 1)

P2097 - Post Catalyst Fuel Trim System Too Rich (Bank 1)

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P2097 - POST CATALYST FUEL TRIM SYSTEM TOO RICH (BANK 1)

Description:  The PCM monitors the correction value from the heated oxygen sensor bank 1, sensor 2 (HO2S12) as part of the fore-aft oxygen sensor control routine. This DTC sets when the correction value is greater than a calibrated limit.
Possible Causes: 
  • Corrosion
  • Incorrect connections
  • Exhaust leaks
  • Contaminated universal HO2S11
Diagnostic Aids:  Inspect the connectors for signs of damage, water intrusion or corrosion.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to Pinpoint Test DZ .