OBD-II code guide
P2096 Post Catalyst Fuel Trim System Too Lean Bank 1
P2096 means the post-catalyst fuel trim calculation indicates a lean condition on bank 1.
What it means
Exhaust oxygen readings after the catalyst suggest too much oxygen or not enough fuel in the system.
Common symptoms
- Check engine light
- Poor fuel economy
- Hesitation
- Exhaust leak noise
- Usually mild drivability symptoms
Likely causes
- Exhaust leak
- Vacuum leak
- Oxygen sensor issue
- Low fuel pressure
- Catalyst or sensor data issue
First checks
- Inspect for exhaust leaks before the downstream sensor.
- Review fuel trims.
- Check for lean codes such as P0171.
- Do not replace the catalytic converter first.