Powertrain
generic / SAE
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.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberB / B3
Possible causes
- Secondary fuel pump relay aged high
- Wiring or connector fault medium
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
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 100–600 €
- Estimated time: 0.5–3 h
- Component: fuel pump
- Component: fuel pump relay secondary
- Component: ecm
- MIL / check engine light
- emissions-relevant
- limp mode possible
Sources
References
sae:J2012