P2296
Fuel Pressure Regulator B Control Circuit High
Fuel & air metering
Generic OBD-II
High
What it means
P2296 means the engine computer detected high voltage in the control circuit for fuel pressure regulator "B." Because this circuit sets fuel delivery pressure, a fault can lead to power loss, hard starting, or stalling. The cause is usually wiring or the regulator solenoid rather than the pump itself.
High
Can I keep driving? Drive with caution — a fuel pressure regulator control fault can cause power loss, hard starting, or stalling until it is repaired.
Common symptoms
What you'll notice
- Check-engine light on
- Loss of power or hesitation
- Hard starting or long crank
- Rough running or stalling under load
Common causes
Most likely first
- Corroded or loose connector at the fuel pressure regulatorLikely
- Open or shorted control wire (signal high) to the regulatorCommon
- Failed fuel pressure regulator solenoidCommon
- Poor ground or supply to the regulator circuitLess often
- Failed PCM/ECM driver (less common)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and inspect the regulator connector and wiring for corrosion, chafing, or shorts to voltage.
- Measure the control circuit for the commanded versus actual state to confirm the high-voltage fault.
- Check live fuel-rail pressure against the commanded value with a scan tool.
- Replace the regulator if the solenoid is open or out of spec.
- Verify PCM grounds and supply before replacing the module. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P2296?+
Drive only as needed. Fuel pressure control affects starting and power, so power loss or a stall is possible. Have it diagnosed promptly.
Can I just clear P2296?+
It will return until the regulator or its wiring is repaired. Clearing it does not restore correct fuel pressure.
Related codes
Often seen with P2296
Read & clear P2296 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX