p2096
Moderate
BMW · SUVs
Post Catalyst Fuel Trim System Too Lean Bank 1
Quick Answer
Error code P2096 on your BMW SUVs means: Post Catalyst Fuel Trim System Too Lean Bank 1. This is usually fixable — see the step-by-step guide below.
Affected Models
Applies to all models
Likely Causes
How to Fix It
1
Review long-term and short-term fuel trim data with a scan tool
2
Inspect exhaust system for leaks between the engine and downstream O2 sensor
3
Test downstream O2 sensor response time and heater circuit resistance
4
Compare upstream and downstream O2 readings to evaluate catalyst health
5
Replace the downstream O2 sensor or catalytic converter as needed
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Downstream oxygen sensor
Catalytic converter
Exhaust gaskets
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