P0192
Fuel Rail Pressure Sensor Circuit Low Input
The ECU reads a voltage from the fuel rail pressure sensor below the calibrated minimum, indicating short to ground or open supply.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Common causes
Ordered by how often each turns out to be the cause.
- Signal wire shorted to groundCommon
- Sensor failed lowPossible
- Connector pins corroded - high contact resistanceLess likely
Parts involved
- Fuel Rail Pressure Sensor
- Wiring Harness
P0192 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.