P2096 - Post Catalyst Fuel Trim System Too Lean (Bank 1)

The Technical Definition: The downstream oxygen sensors are detecting that the exhaust gases on Bank 1 have too much oxygen after passing through the catalytic converter.

Common Symptoms: The check engine light illuminates, and you may notice slight hesitation or reduced fuel efficiency.

Typical Fix: This is frequently caused by a subtle exhaust leak right near the catalytic converter or a failing downstream oxygen sensor. It is highly recommended to check for cracked exhaust manifolds or loose exhaust flanges before spending money on new sensors.