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P2295 — Fuel Pressure Regulator B Control Circuit Low

Manufacturer-specificPowertrain (engine & transmission)

P2295 indicates that the fuel pressure regulator (fuel pressure regulator B) is operating at a lower pressure than expected according to the engine control module. The problem is detected by a low‑pressure signal in the regulator’s control circuit.

Symptoms

What causes it — most likely first

1. Faulty fuel pressure regulator B

The regulator itself can wear out or become stuck in the low‑pressure position, causing a persistent low‑pressure reading.

2. Electrical short or high resistance in the regulator circuit

A short or degraded wiring harness, connector, or fuse can lower the voltage seen by the PCM.

3. Failed fuel pump or fuel pump relay

A pump that cannot maintain proper pressure may trigger a low‑pressure signal to the regulator.

4. Vacuum leak or clogged fuel filter

An unintended vacuum source or blockage can reduce fuel pressure, mimicking a regulator fault.

5. PCM/ECM software fault

In rare cases, a software glitch could misread the regulator’s signal, but this is uncommon.

How it's diagnosed

  1. Verify the PCM’s fuel pressure regulator B signal with a scan tool to confirm the low reading.
  2. Check the regulator’s wiring harness and connectors for damage, corrosion, or high resistance.
  3. Test the fuel pump operation and pressure with a gauge to rule out pump or relay issues.
  4. Inspect for vacuum leaks or a clogged fuel filter that could reduce pressure.

Code facts & related codes

SystemPowertrain (engine & transmission)
StandardizationManufacturer-specific (P1/B1/C1/U1)

Frequently asked

Is the engine control module the usual fix for P2295?

No, most cases are due to the regulator itself or its electrical circuit. Replacing the PCM is rarely necessary.

Can I drive my car with this code?

It can be done, but you may experience reduced performance and fuel economy. It is advisable to address the issue before extended operation.

Does a high fuel pressure regulator reading cause the same code?

No, a high pressure reading would trigger a different code. P2295 specifically indicates a low pressure condition.