Faulty fuel pressure regulator solenoid or its internal coil; Open or high-resistance wiring in the control circuit between the ECM and the regulator; Short to voltage on the control circuit, often from chafed insulation or a pinched wire; Corroded or loose electrical connector at the fuel pressure regulator; Failed ECM driver for the fuel pressure regulator circuit; Poor ground connection for the fuel pressure regulator circuit

DTC codes / P00xx · Fuel and air metering and auxiliary emission controls / P0092

P0092Fuel Pressure Regulator 1 Control Circuit High

Q: What does code P0092 mean?

Fuel Pressure Regulator 1 Control Circuit High. P0092 is a generic powertrain code indicating that the engine control module (ECM) has detected an abnormally high voltage on the control circuit for fuel pressure regulator 1, which is the primary regulator on the engine. The ECM commands a specific current or duty cycle to the regulator solenoid, and the feedback circuit reports a voltage above the expected range, signaling an open circuit, short to power, or a faulty regulator.

P0092 is a generic powertrain code indicating that the engine control module (ECM) has detected an abnormally high voltage on the control circuit for fuel pressure regulator 1, which is the primary regulator on the engine. The ECM commands a specific current or duty cycle to the regulator solenoid, and the feedback circuit reports a voltage above the expected range, signaling an open circuit, short to power, or a faulty regulator.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaFuel and air metering and auxiliary emission controls

Symptoms you may notice

Illumination of the check engine light, often with no other noticeable symptoms
Rough idle or stumbling, especially when the engine is cold
Reduced engine performance or hesitation during acceleration
Poor fuel economy due to incorrect fuel pressure
Hard starting or extended cranking before the engine fires
In rare cases, a rich fuel smell or black smoke from the exhaust

Common causes, most likely first

Faulty fuel pressure regulator solenoid or its internal coil
Open or high-resistance wiring in the control circuit between the ECM and the regulator
Short to voltage on the control circuit, often from chafed insulation or a pinched wire
Corroded or loose electrical connector at the fuel pressure regulator
Failed ECM driver for the fuel pressure regulator circuit
Poor ground connection for the fuel pressure regulator circuit

How to diagnose and fix it

Connect a scan tool and verify the code is current, then check for any related codes and freeze-frame data
Visually inspect the fuel pressure regulator connector and wiring for damage, corrosion, or loose pins
Measure the resistance of the fuel pressure regulator solenoid and compare it to the manufacturer's specification
Back-probe the control circuit at the ECM and check for an open or short to voltage with a multimeter
Perform a voltage drop test on the ground circuit to rule out high resistance
If the wiring and regulator test good, substitute a known-good regulator or use a lab scope to verify the ECM driver signal
Clear the code and test-drive the vehicle to confirm the repair and ensure the code does not return

What the high voltage reading really means

A high voltage on the control circuit often indicates an open circuit rather than a short, because the ECM pulls the circuit up to a reference voltage when the driver is off.
Many technicians replace the fuel pressure regulator only to find a chafed wire in the harness near the intake manifold or valve cover, so always inspect the entire circuit before condemning the part.
This code can be set by a weak or failing battery or charging system, as low system voltage can cause the ECM to misinterpret the feedback signal.
On some vehicles, the fuel pressure regulator is part of the fuel pump assembly in the tank, making electrical access difficult and increasing the chance of misdiagnosis.
A dirty or clogged fuel filter can cause the regulator to work harder and eventually set this code, so check fuel pressure and filter condition as part of the diagnosis.

Can I keep driving with P0092?

You can usually drive the vehicle with this code, but avoid heavy acceleration or towing until it is repaired, as incorrect fuel pressure can cause poor performance and increased emissions. If the engine runs rough or stalls, have it checked promptly to prevent damage to the catalytic converter.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.