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Nissan
🔴 High
Nissan
P0191
Fuel Rail Pressure Sensor Performance (YD25 Navara)
The P0191 fault on your Nissan indicates a Fuel Rail Pressure Sensor Performance (YD25 Navara). Your Nissan has registered an anomaly during a diagnostic self-test, indicating the system is struggling to reach its target operating range.
Brand
Nissan
Fault Code
P0191
Severity
🔴 High
Models
Qashqai, Juke, Micra, Note, X-Trail, 370Z, Navara
🛠️ Diagnostic Overview
Difficulty Level
🛠️🛠️
Medium (Moderate)
Estimated Time
⏱️ 1-2 Hours
🧰 Required Tools
- ✓ Socket Wrench & Hand Tools
⚠️ Possible Causes
- Worn HPFP (YD25 HPFP has known reliability issues)
- Failing regulator
- Contaminated fuel
- Clogged filter
🔧 Recommended Fixes
- Replace fuel filter
- Test HPFP
- Replace pressure regulator
- Replace HPFP if pressure is consistently low
🔴 This is a high-priority fault. Have the vehicle inspected by a qualified technician as soon as possible.
🚗 Commonly Affected Vehicles
🏭 Nissan – Other Common Fault Codes