OBD-II code · Powertrain (generic, extended)
P2BB3 Fuel Pump Secondary Circuit Performance
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 with P2BB3?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelySecondary fuel pump relay aged
- PossibleWiring or connector fault
Symptoms
- Check engine light on
- Hard start, no start, or stalling under load
- Power loss especially at high load or rpm
- Possible long cranking time
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Likely to fail
- Parts involved
- Fuel Pump, Fuel Pump Relay Secondary, Ecm
Related codes
- P2BB0Alternative Fuel Consumption Too Low
- P2BB1Alternative Fuel Consumption Too High
- P2BB2Alternative Fuel Tank Empty
- P2BB4Engine Coolant Temperature Sensor 4 Circuit Intermittent/Erratic
- P2BB5Engine Coolant Temperature Sensor 5 Circuit Intermittent/Erratic
- P2BB6Engine Coolant Temperature Sensor 6 Circuit
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.