P0192 — Fuel Rail Pressure Sensor Circuit Low
Seen on: Heavy Truck
Fuel Rail Pressure Sensor Circuit Low. Common causes: Sensor shorted to ground.
Your code rides along, so nearby mechanics see the fault before they quote you.
How serious is it?
Serious. Power derate likely — plan to stop soon.
Most likely causes
- Sensor shorted to ground
- Wiring damage
- failed sensor
First moves (roadside)
- Check sensor supply voltage
- test signal voltage
- replace sensor
FAQ
Fuel Rail Pressure Sensor Circuit Low. Common causes: Sensor shorted to ground.
Serious — Power derate likely — plan to stop soon.
The most common cause is: Sensor shorted to ground. Other possibilities include Wiring damage; failed sensor.
Power derate likely — plan to stop soon. When in doubt, get a qualified mobile diesel tech on the truck before continuing.
Find a mechanic or related guides
General diagnostic guidance for diesel engines (Cummins, Detroit, PACCAR, Volvo, Mack and more). Not a substitute for a scan-tool diagnosis on your specific truck.