P0092 — Fuel Pressure Regulator 1 Control Circuit High

OBD2 code P0092 flags a problem with the fuel delivery and mixture control (fuel pressure regulator 1 control circuit high). Short, gentle driving to a shop is usually possible. Common culprits: vacuum or intake leaks skewing the mixture, weak fuel pump or clogged fuel filter, faulty fuel rail pressure sensor or wiring.

powertrain (engine/transmission)

Is it safe to drive?

Caution — possible fuel-delivery malfunction P0092 can affect fuel-pressure control, so avoid sustained high-load driving and arrange diagnosis promptly. If the engine stalls, runs severely rough, or loses substantial power, stop safely and do not continue driving.

Typical symptoms

The check-engine light may illuminate and store P0092
The engine may idle roughly, hesitate, or surge
A cold engine may crank or start inconsistently
The engine may stall or lose power under load
Fuel pressure may remain inconsistent even though P0092 is primarily a control-circuit fault

Common causes

An open or high-resistance connection in the fuel pressure regulator 1 control circuit
A short to battery voltage in the regulator 1 control wiring
A faulty fuel pressure regulator 1 control solenoid or actuator
Corrosion, water intrusion, or a loose terminal at the regulator or PCM connector
A failed PCM driver or reference-ground circuit for the regulator 1 control output

How to diagnose with an OBD scanner

Confirm the code with an OBD2 scanner Connect an OBD2 scanner, ELM327 adapter, or AIScanAuto and confirm that P0092 is currently stored. Review freeze-frame data and monitor fuel-pressure readings and regulator-command data if the vehicle supports those parameters.
Inspect the regulator control wiring Disconnect the battery as directed by the service information, then inspect the harness, terminals, and connectors between the fuel pressure regulator 1 control device and the PCM. Look for corrosion, damaged insulation, pin fit issues, and aftermarket wiring connections.
Measure the control-circuit voltage With the ignition commanded on, back-probe the control terminal and the corresponding PCM terminal. Compare the voltage or PWM waveform with service information; some regulator controls are grounded outputs while others are pulse-controlled, so do not assume a constant voltage is normal.
Check for an open or shorted circuit With the control device disconnected, test continuity to ground and for a short to battery voltage. If the abnormal high signal disappears with the device isolated, the solenoid or regulator actuator is likely defective; if it remains, continue tracing the harness and PCM.
Verify repair and fuel pressure After repairing the wiring or replacing the control device, clear P0092 and confirm that the monitor no longer detects a high control-circuit condition. Relieve fuel pressure safely, then compare measured fuel pressure with the vehicle specification under the required test conditions.

Approximate repair cost

A typical independent-shop estimate for diagnosing and repairing P0092 is approximately $180–$650 USD, depending on whether the fault is a wiring repair, control solenoid, regulator actuator, or PCM-related issue. These figures are estimates and vary by region, vehicle design, and labor rates.

Common questions

Does P0092 mean the actual fuel pressure is too high?

Not necessarily. P0092 usually means the PCM detected voltage above the expected level in the fuel pressure regulator 1 control circuit; it does not by itself prove that fuel pressure is excessive.

Is the fuel pressure regulator the only part that can cause P0092?

No. An open connector, high-resistance wiring, a short to battery voltage, a defective control solenoid, or even a PCM driver fault can produce P0092 without the regulator itself failing.

Can the vehicle still be driven with P0092 stored?

It may be drivable if the fault is intermittent and fuel pressure remains stable, but hesitation, rough idle, stalling, or power loss under load should prompt an immediate inspection and repair.

How is P0092 diagnosed accurately?

Use an OBD2 scanner or compatible ELM327/AIScanAuto tool to confirm the code, then inspect and voltage-test the regulator control circuit, isolate the control device, and verify commanded operation and actual fuel pressure.

When your engine computer logs P0092, it's telling you the fuel pressure regulator 1 control circuit is reading abnormally high voltage. Specifically, the module expects a specific signal range from this circuit and instead sees something closer to full battery voltage — a condition described as "circuit high." The powertrain control module doesn't set this code after a single bad reading; it validates the fault across multiple drive cycles under specific conditions before illuminating the Check Engine light.

The fuel pressure regulator controls fuel pressure at the rail, which directly affects the air-fuel mixture the engine receives. When the regulator's control circuit stays high, the module can no longer modulate fuel pressure correctly. The freeze frame data stored alongside P0092 captures engine load, RPM, coolant temperature, and vehicle speed at the moment the fault triggered — this snapshot becomes your roadmap for recreating the problem during diagnosis.

Common Symptoms of P0092

Noticeable increase in fuel consumption during normal driving
Reduced engine power, especially when accelerating or climbing grades
Rough idle that feels uneven, often accompanied by hesitation on throttle input
Fuel odor inside the cabin or near the tailpipe in more severe cases
Extended cranking time before the engine starts, or failure to start on the first attempt
Illumination of the Check Engine light on the dashboard

What Causes P0092

The most frequent culprit behind P0092 is a failed fuel pressure regulator pulling the control signal high. An open ground return on the regulator circuit produces the same effect — without a proper path to ground, voltage climbs. A shorted signal wire (contact with a power source) will also trigger this code. On the fuel delivery side, a weak fuel pump or severely clogged fuel filter can contribute to abnormal regulator behavior. Contaminated or incorrect fuel grade affects regulator operation indirectly. Intake vacuum leaks and clogged fuel injectors alter mixture enough to confuse the pressure control loop. A faulty fuel rail pressure sensor sometimes generates false high readings that cascade into regulator complaints.

How to Diagnose P0092

Connect an OBD2 scanner and confirm P0092 is stored in permanent memory. Record the freeze frame data immediately — this shows the exact operating conditions when the fault appeared, and you should replicate these conditions during your road test after repairs.
Scan for any other diagnostic trouble codes. Related codes often point to the root cause rather than the symptom. Check manufacturer TSB databases using your VIN; many P0xxx codes have documented fixes or available software updates.
Perform a thorough visual inspection of the wiring harness and connectors feeding the fuel pressure regulator. Look for damaged insulation, corrosion at the pins, broken wires hidden under loom tape, and loose or improperly seated connectors.
With the fuel pressure regulator disconnected, probe the signal wire at the harness connector using a multimeter. If voltage remains high with the component unplugged, the harness itself has a short to power. If voltage drops to normal reference levels, the failed component is pulling the circuit high.
Measure fuel rail pressure at idle and under load, then compare results against factory specifications for your specific engine.
Monitor short-term and long-term fuel trims in live data. Positive trims indicate the computer is adding fuel to compensate for a lean condition, which often accompanies pressure regulator faults.
Clear the code, complete a drive cycle that covers the freeze frame conditions (high load, specific temperature ranges, highway speeds), and verify P0092 does not return.

Repair Options and Costs

Affording to tackle the most probable failures first keeps unnecessary expense down:

Fuel pressure regulator or its position sensor replacement: $150–$450
Fuel injector cleaning or replacement: $200–$800
Fuel filter replacement: $80–$200
Fuel pump replacement: $400–$900

Total Repair Cost for P0092

Your actual spend hinges entirely on which component failed. Parts and labor at independent shop rates typically break down as follows: regulator or sensor work runs $150–$450, injector service costs $200–$800, filter replacement lands between $80–$200, and fuel pump jobs reach $400–$900. Most P0092 repairs conclude somewhere in the $80–$900 range. Spending time on careful diagnosis before purchasing parts pays off — the pump scenario represents the worst case and should be your last consideration, not your first assumption.

Can You Drive with P0092?

Drive with caution. A malfunctioning fuel pressure regulator destabilizes the air-fuel mixture, which can produce stalling, hesitation, and poor throttle response. In extreme cases, unburned fuel entering the exhaust stream overheats the catalytic converter and causes costly damage. Until you confirm the exact failure point, limit driving to essential trips and avoid highway distances. Have the code investigated before any long-distance travel.