What Does P1250 Mean?
DTC P1250 indicates the pressure regulator control solenoid valve circuit has an open or short circuit condition. This solenoid controls fuel rail pressure by modulating the fuel pressure regulator, and a circuit fault prevents proper pressure management. Without accurate fuel pressure control, the engine may run rich or lean depending on whether pressure defaults high or low.
Safety Warning
Loss of fuel pressure regulation can cause either excessively high fuel pressure (rich running, potential injector flooding, increased fire risk) or low fuel pressure (lean misfires, potential stalling). Both conditions affect drivability and should be addressed promptly.
Common Causes
30%
Pressure regulator solenoid with failed coil (open or shorted winding)
25%
Wiring open or short in the solenoid control circuit
20%
Corroded connector at the pressure regulator solenoid
15%
PCM solenoid driver circuit failure
10%
Solenoid connector water intrusion causing intermittent electrical fault
Diagnostic Steps
1
Disconnect the pressure regulator control solenoid and measure coil resistance — compare to manufacturer specification (typically 5-30 ohms depending on design).
2
Check for wiring continuity and shorts to ground or B+ in the solenoid control circuit from the PCM to the solenoid connector.
3
Verify the PCM is commanding the solenoid by measuring voltage or PWM signal at the solenoid connector with ignition on and engine running.
4
Monitor fuel rail pressure with a scan tool while commanding the solenoid on and off — pressure should change in response to commands.
5
Inspect the solenoid connector for moisture, corrosion, or mechanical damage that could cause intermittent circuit faults.
Estimated Repair Cost
$100 - $600
Parts + labor, varies by vehicle and location
DTC P1250 indicates the pressure regulator control solenoid valve circuit has an open or short circuit condition. This solenoid controls fuel rail pressure by modulating the fuel pressure regulator, and a circuit fault prevents proper pressure management. Without accurate fuel pressure control, the ...
The most common cause of P1250 (Pressure Regulator Control Solenoid Valve Open or Short) is: Pressure regulator solenoid with failed coil (open or shorted winding)
Typical repair costs for P1250 range from $100 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Loss of fuel pressure regulation can cause either excessively high fuel pressure (rich running, potential injector flooding, increased fire risk) or low fuel pressure (lean misfires, potential stalling). Both conditions affect drivability and should be addressed promptly.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1250 to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Fuel Pressure Regulation
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
