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DTC P2096: Post Catalyst Fuel Trim System Too Lean Bank 1

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P2096 - POST CATALYST FUEL TRIM SYSTEM TOO LEAN BANK 1

Description:  The powertrain control module (PCM) monitors the correction value from downstream heated oxygen sensor (HO2S) as part of the fore-aft oxygen sensor control routine. The test fails when the correction value is greater than a calibrated limit.
Possible Causes: 
  • Corrosion
  • Incorrect connections
  • Exhaust leaks
  • Contaminated HO2S
Diagnostic Aids:  Inspect the connectors for signs of damage, water ingress, or corrosion.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST DZ .
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