OBD-II Code Audi

P1126 — Audi — Long Term Fuel Trim Additive Air Bank 2 System Too Lean

A lean mixture condition has been detected on Bank 2.

Brand Audi
System Fuel System
Severity Medium
Safe to drive? Not recommended
Advanced scanner Yes

What does code P1126 mean on Audi vehicles?

A lean mixture condition has been detected on Bank 2.

Common symptoms

  • Loss of engine power.

Possible causes

  • Intake air leak.

Initial recommendation

Check for intake air leaks.

Safety notice

This information is for guidance only. Brand-specific codes may vary by model, year, engine, transmission and vehicle configuration. It does not replace a physical inspection or diagnosis by a qualified mechanic. If the vehicle is unsafe to operate, avoid driving it and seek professional inspection.

Analyze this code with MecaOBD

Use the app to combine Audi code P1126 with your vehicle's actual symptoms for more complete diagnostic guidance.

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