Code result
P2BB0
Alternative Fuel Consumption Too Low
Moderate severity
What it means
The AFCM detects that alternative fuel consumption falls below the expected value for the active operating mode. Indicates injector clogging, leaks before injectors, or incorrect tank-fill correction.
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
Alt fuel injectors partially clogged
highOne of the most commonly reported causes for this code — check this first.
Tank-fill calibration drifted
mediumA plausible cause — test and verify before replacing parts.
Related help
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