P025C
Fuel Pump Module A Control Circuit Low
Fuel delivery
Generic OBD-II
High
What it means
P025C means the ECM sees a low-voltage (shorted or open) fault in the control circuit for the "A" fuel pump module — the electronics that drive the fuel pump. Because it directly affects fuel delivery, the car may crank without starting, stall, or run rough. Start with the fuse, relay, and control wiring before condemning the pump module.
High
Can I keep driving? Risky — a low control-circuit fault to the fuel pump module can cause stalling or a no-start, so treat it as leave-it-parked until diagnosed.
Common symptoms
What you'll notice
- Engine cranks but will not start, or hard starting
- Engine stalls or dies while driving
- Rough running or intermittent power loss
- May fail an emissions test
- Check-engine light on
Common causes
Most likely first
- Short-to-ground or low-voltage fault in the pump module control-circuit wiringLikely
- Corroded or loose connector at the fuel pump moduleCommon
- Blown fuel pump fuse or faulty relayCommon
- Faulty fuel pump (driver) control moduleLess often
- Failed ECM / pump driver (rare — verify wiring first)Less often
How to diagnose & fix
Work through it in order
- Scan and read freeze-frame data, then confirm the circuit is reading low (shorted or open).
- Check the fuel pump fuse and relay first — the cheap, common failures.
- Inspect the control-circuit wiring and connector for shorts, chafing, and corrosion.
- Measure control voltage at the fuel pump module during key-on and cranking.
- If wiring and power are good, replace the fuel pump control module. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P025C?+
No — the pump may cut out and strand you. Have the circuit diagnosed before driving.
Can I just clear P025C?+
Clearing won't repair the circuit; the code returns and the car may not start until the fault is fixed.
Related codes
Often seen with P025C
Read & clear P025C 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