P025B
Fuel Pump Module A Control Circuit Range/Performance
Fuel delivery
Generic OBD-II
High
What it means
P025B means the ECM sees the fuel-pump (driver) module's control circuit performing outside its expected range — the commanded and actual pump behavior don't match. Because this circuit governs how the fuel pump is driven, delivery can become unstable, leading to hard starting, stalling, or a no-start. Check the fuse, relay, wiring, and grounds before replacing the module or pump.
High
Can I keep driving? Risky — fuel delivery can become unstable, causing stalling or a no-start, so treat it as urgent and avoid long trips until fixed.
Common symptoms
What you'll notice
- Check-engine light on
- Hard starting or a no-start
- Stalling or the engine cutting out
- Rough idle or hesitation under load
- May fail an emissions readiness check
Common causes
Most likely first
- Faulty fuel-pump driver module or fuel pumpLikely
- Wiring or connector fault in the control or feedback circuitCommon
- Blown fuse or failed relay in the fuel-pump circuitCommon
- Poor ground or corroded connectionsLess often
- ECM fault (rare)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and check the fuel-pump fuse and relay.
- Inspect the fuel-pump module connector, wiring, and ground.
- Monitor fuel pressure and the pump-control signal with a scan tool.
- Replace the fuel-pump driver module or the pump if it is faulty.
- Clear the code and re-test.
FAQ
Quick answers
Is it safe to drive with P025B?+
Not really. The fuel-pump control circuit is performing out of range, so the pump may drop out and cause stalling or a no-start. Get it diagnosed before depending on the car.
Can I just clear P025B?+
It will return whenever the circuit performs abnormally again. Repair the module, wiring, or pump rather than clearing it.
Related codes
Often seen with P025B
Read & clear P025B yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX