P0190Infiniti G37Years: 1996 - 2026
Fuel Rail Pressure Sensor Circuit Malfunction
Reviewed by ASE Certified Technician
What does this mean?
Code P0190 indicates a problem with the fuel rail pressure sensor or its circuit. This sensor monitors fuel pressure in the fuel rail to ensure proper injection pressure.
Disclaimer: This diagnostic code is part of the standard OBD2 system and can apply to Infiniti G37 models manufactured from 1996 to 2026. However, please note that the presence of this specific code depends on your vehicle's exact engine configuration, options, and production year.
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Common Causes
Faulty fuel rail pressure sensor
Weak or failing fuel pump
Faulty fuel pressure regulator
Clogged fuel filter
Damaged, chafed, or broken wiring harness
Symptoms to Watch For
- Check Engine Light is illuminated
- Difficulty starting the engine
- Rough or unstable idle
- Significant loss of engine power
- Engine stalling or dying unexpectedly
- Poor acceleration or sluggish response