P0192
High SeverityFuel Rail Pressure Sensor Circuit Low
Fuel System
What Does P0192 Mean?
Fuel rail pressure sensor reads too low. Could be a sensor fault or actually low fuel pressure.
Common Fix
Replace fuel pressure sensor or fuel pump
Estimated Cost (DIY)
$30 - $300
Symptoms
- ⚠️Loss of power
- ⚠️Engine stalling
- ⚠️Hard starting
- ⚠️Rough running
Common Causes
Faulty sensorlikely
Weak fuel pumppossible
Clogged fuel filterpossible
Fuel line restrictionunlikely
How to Diagnose P0192
- 1Check fuel pressure with mechanical gauge
- 2If actual pressure is fine, replace sensor
- 3Check fuel filter
- 4Test fuel pump
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Frequently Asked Questions
- Can a bad fuel pump cause P0192?
- Yes — if actual fuel pressure is low, the sensor is reading correctly and the fuel pump or filter needs attention.
- How to tell sensor vs pump?
- Compare the sensor reading to a mechanical fuel pressure gauge. If they match and pressure is low, the pump is weak. If mechanical gauge shows normal pressure, the sensor is bad.