What code is P1250 on a bmw?

What code is P1250 on a bmw?

The code P1250 on a BMW means that the PCM has registered a loss of power from the fuel pressure regulator control valve. The fuel pressure regulator valve is the part that controls the amount of and pressure of fuel that is sent to the injectors, it does this by opening or closing a valve inside the assembly.

Where is the fuel pressure regulator located on a BMW e46?

The M52TU has two possible locations for the fuel pressure regulator. One is on top of the engine, directly connected to the fuel rail and the other one is near the fuel filter right next to the 3/2way valve. You should have seen it when you replaced the filter.

How do I fix code P0173?

What repairs can fix the P0173 code?

1. Replacing the mass air flow sensor.
2. Replacing the fuel pressure regulator.
3. Replacing the intake manifold gaskets.
4. Repairing or replacing the engine air filter intake system.
5. Replacing a vacuum line connected to the throttle body.
6. Repairing a leaking brake booster.

Where is E46 fuel filter?

The BMW E46 fuel filter is located on the left side of the vehicle approximately mid way back. It is covered with a metal plate. Using an 8mm nut driver or socket wrench, remove the bolts securing the fuel filter cover to the chassis of the vehicle.

What causes P0173?

Code P0173 is triggered by the engine control module (ECM) when it detects that the air-fuel ratio is too lean or too rich. For most lean and rich conditions, the ECM can compensate for the lack or air or gas entering the engine. However, if the amount of compensation is too much, a P0173 code may set.

Will a car run with a bad fuel pressure regulator?

If there is a leaking or internal damage in the regulator, this causes the emission of black smoke in the tailpipe. When the fuel pressure regulator is problematic, the engine can run rich. Aside from using more fuel to produce the power needed for the car to run, another effect is the production of black smoke.