P1303 – Fuel Pump Control Circuit Low
Want to confirm the real cause of this fault code?
A high‑quality OBD2 scanner gives you live data, fuel trims, sensor readings and freeze‑frame information — exactly what you need to verify the root cause of this code with confidence.
Symptoms
- No start
- Stalling
- Weak acceleration
- Long crank time
- Check engine light
Causes
- Corroded connector
- Damaged wiring
- Weak relay
- Faulty pump driver module
Diagnosis
- Check pump voltage
- Inspect wiring
- Test relay
- Scan pump driver module
Repair
- Repair wiring
- Replace relay
- Replace pump driver module