P2296: Fuel Pressure Regulator B Control Circuit High
What to do
Expect reduced power and rough running. Ask for the supply and fuse to be checked before the valve is replaced — those are the cheap end of the same code.
What this code means
The second regulator's control circuit reads above its valid range — an open circuit, a short to supply, or a solenoid winding that has failed open.
An open winding is the ordinary end-of-life failure for a valve that is energised continuously and modulated constantly, so on a high-mileage engine this is often the valve rather than a fault to chase. The supply and its fuse are the cheap checks that come first.
Likely causes
Start here
- Open circuit in regulator control wiring · moderate
- Faulty fuel pressure regulator · moderate
- Corroded or loose connector · easy
Less common
- Blown fuse or failed supply · easy
- Wiring shorted to voltage · moderate
Symptoms
Components involved
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
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What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
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