Fuel Pressure Regulator Control Circuit High
The ECU detected abnormally high voltage in the fuel pressure regulator control circuit, like a stuck accelerator pedal signal that won't come back down. This prevents the regulator from properly controlling fuel pressure, disrupting the engine's fuel delivery.
The ECU monitors voltage feedback from the fuel pressure regulator solenoid control circuit. It expects voltage to cycle within a normal operating range as it commands the regulator open and closed. A persistently high voltage reading indicates a circuit fault, open wire, or failed solenoid.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Regulator Control Voltage | 0.5–4.5 volts (cycling) | Above 4.7 volts sustained |
| Circuit Resistance | 2–8 ohms | Above 15 ohms or open circuit |
Code P0092 is a moderate fault. You can generally drive to a workshop, but avoid long trips or high-load driving (motorway, uphill towing) until it is diagnosed. If the code keeps returning after clearing, or if you notice the symptoms listed above worsening, do not delay professional diagnosis. Many moderate codes have multiple possible root causes — a mechanic with live OBD data can identify the exact fault more efficiently than part-by-part trial and error.
Once the fault is repaired, P0092 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.