Code result
P21FA
Fuel Control System B Too Lean at Idle
Moderate severity
What it means
Secondary fuel control loop B reports a lean condition at idle on bank 2. Idle is sensitive to vacuum leaks since manifold flow is low.
Is it safe to drive?
Use caution
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.
Most likely causes
Vacuum leak on bank 2 intake
highOne of the most commonly reported causes for this code — check this first.
Related help
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