P1003 – Fuel Pressure Deviation Detected (Ford)
Description
P1003 Ford indicates that the PCM detected fuel pressure outside the expected range. This can cause hesitation, stalling, and poor acceleration under load.
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View Recommended ScannersSymptoms
- Hard starting
- Hesitation
- Poor acceleration
- Stalling under load
Causes
- Weak fuel pump
- Clogged filter
- Faulty pressure regulator
- Fuel pressure sensor fault
Diagnosis
- Measure fuel pressure
- Compare to specifications
- Check sensor signal
Repair
- Replace pump or filter
- Repair leaks
- Replace pressure regulator or sensor
