P2096 Post Catalyst Fuel Trim System Too Lean (Bank 1)
What does P2096 mean?
P2096 — Post Catalyst Fuel Trim System Too Lean (Bank 1) (bank 1). This is an OBD-II diagnostic trouble code a scanner retrieves when your vehicle's computer detects post catalyst fuel trim system too lean (bank 1) on bank 1. The level of risk depends on how the vehicle is currently running and how long you've been driving with the light on.
Common causes of P2096
- Exhaust leak between the exhaust manifold and catalyst
- Failed or weak downstream oxygen sensor
- Faulty catalyst condition
- Fuel system pressure faults
- Engine misfire under load
How to fix P2096
- Check for exhaust leaks ahead of the catalyst
- Compare downstream sensor activity to fuel trims
- Verify catalyst efficiency with a scan tool
- Review fuel trims at idle and load for a real lean condition
- Repair the leak, sensor, or fuel issue and clear the code