Code result
P2BB3
Fuel Pump Secondary Circuit Performance
High severity
What it means
The ECM detects that the secondary fuel pump control circuit (typically used for high-load enrichment) does not respond as expected. Pump output, relay, or driver fault.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Secondary fuel pump relay aged
highOne of the most commonly reported causes for this code — check this first.
Wiring or connector fault
mediumA plausible cause — test and verify before replacing parts.
Related help
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