OBD-II code · Powertrain (generic)
P023F Fuel Pump Secondary Circuit/Open
Open circuit on the secondary fuel pump (transfer/lift pump). Pump cannot be driven.
Is it safe to drive with P023F?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyWiring break
- Less likelyPin pushed back out of connector body
- Less likelyCracked solder joint inside the module or sensor
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
- Often, with basic tools
- Typical labour
- 0.5–3 h
- Emissions test
- Likely to fail
- Parts involved
- Secondary Fuel Pump, Pump Wiring
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Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.