P0092 — Fuel Pressure Regulator 1 Control Circuit High

What P0092 means

The engine control module drives the fuel pressure regulator (control valve) and monitors the voltage in its control circuit. P0092 sets when that voltage reads higher than expected. The usual culprits are a failed regulator or solenoid, an open or shorted-to-power wire, and less often a bad fuel pressure sensor or control module.

Symptoms

• Check Engine Light on
• Hard starting or long cranking
• Loss of power under load
• Rough idle or rough acceleration
• Hesitation or surging
• Reduced fuel economy
• Limp mode with limited power

Possible causes

1. Faulty fuel pressure regulator or solenoid
2. Open wire or poor connection in the control circuit
3. Control circuit shorted to battery voltage
4. Faulty fuel pressure sensor
5. Failed fuel metering valve (on systems that use one)
6. Control module input fault or software issue (rare)

How to diagnose

1. Read all codes and freeze-frame data, note the conditions, clear the code and see if it returns
2. Inspect the regulator and pressure sensor connectors and harness for chafing, corrosion or moisture
3. Test the control circuit for opens and shorts to power and ground, and verify regulator power and ground
4. Measure the regulator coil resistance and compare it with the specification
5. Use a scan tool to compare commanded and actual fuel pressure at cranking, idle and under load
6. Confirm low-pressure fuel supply (pressure and volume) is normal first
7. Command the regulator with a scan tool active test if supported
8. Check the fuel pressure sensor reading and its wiring

Common fixes

• Replace the fuel pressure regulator or solenoid
• Repair or replace damaged wiring and connectors
• Replace a defective fuel pressure sensor
• Update the control module software or replace the module once confirmed faulty

Questions and answers

What does P0092 mean?

The engine computer detected too high a voltage in the fuel pressure regulator 1 control circuit. It is usually an open or shorted wire, or a failing regulator.

Can I drive with P0092?

Only for a short distance, such as to a shop. You may get power loss, hesitation and hard starts, so don't put off diagnosis.

How do I fix P0092?

Start by inspecting the regulator wiring and connector, then test the regulator and pressure sensor. Replacing the control module is rarely needed and only after full testing.

This is general information about the code. The meaning can differ between makes and models: a scan tool and the repair manual for your car will show the exact cause.