P2096
Post Catalyst Fuel Trim System Too Lean Bank 1
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–222 (est.)
Symptoms
- Check Engine light comes on
- Reduced engine power
- Increased fuel consumption
- Unstable engine idling
- Possible popping noises in the exhaust system
Causes
- Air leak in the exhaust system after the catalyst
- Malfunction of the rear oxygen sensor (lambda probe)
- Contaminated or damaged catalytic converter
- Problems with the fuel pump or injectors
- Malfunction of the mass air flow sensor (MAF)
How to Fix
- Check the exhaust system for air leaks
- Check the operation of the rear oxygen sensor
- Diagnose the condition of the catalytic converter
- Check the operation of the fuel system (pressure, injectors)
- Check the readings of the mass air flow sensor
Related codes
Error P2096 by Vehicle Brand
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