Fuel Pressure Regulator 1 Control Circuit High
The P0092 code indicates that the Engine Control Module (ECM) has detected a high voltage signal in the control circuit of the fuel pressure regulator (solenoid). This regulator controls fuel pressure in the fuel rail by adjusting the amount of fuel returning to the tank. A high voltage condition typically points to a short to power, an open circuit, or a faulty regulator solenoid. This can cause incorrect fuel pressure, leading to drivability issues.
01. Most Common Causes
- Faulty fuel pressure regulator solenoid
- Short to power in the control circuit wiring
- Open or high resistance in the circuit
- Corroded or damaged connector
- Failed ECM (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine running rich or lean
- Poor fuel economy
- Rough idle or hesitation
- Possible hard starting
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect the fuel pressure regulator connector and wiring for damage, corrosion, or shorts.
Step 3: Using a multimeter, check the control circuit voltage at the regulator connector with key on. Should be near battery voltage when commanded off, and pulse when on.
Step 4: Test the regulator solenoid resistance (typically 4-12 ohms). Compare to specs.
Step 5: If circuit and solenoid are good, check for a faulty ECM by monitoring the signal with a scan tool.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as incorrect fuel pressure can cause engine damage or poor performance. Have it diagnosed promptly.
How much does it cost to fix?▼
Repair costs vary: replacing the fuel pressure regulator solenoid typically costs $150-$300 including parts and labor. Wiring repairs may be $100-$200. ECM replacement is more expensive.