Question about 2000 Mazda MPV

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Where its the location for this code p1250

I want to know where its the location in the engine compartment

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Find the fuel rail. On the the end of one of the rails you will see the fuel pressure regulator. It will have a small vacuum hose coming out of the top of it. Follow that hose to the fuel pressure regulator solenoid. Let me know if you have any questions and I'll do my best to answer them. Thank you for using!

Posted on Feb 18, 2012


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Have a BMW 2000 323I..replaced fuel pump ..Getting code P1250..any ideas ?

OBD code of: "P1250- PRC Solenoid Circuit Malfunction. Which malfunction of Fuel Pressure Regulator Control unit. PRC is located
by the fuel pump by the left side on the bottom rail under some plastic you will find it. PRC costs about $90.

Mar 15, 2015 | BMW Cars & Trucks

1 Answer

Bmw 2000 323I..code p1250.

Code P1250 is PRC malfunction, Which is for Fuel Pressure Regulator Control unit. I have answered this question already. PRC is on the Bottom fuel rail by the fuel pump by the left side under some plastic covers.

Mar 15, 2015 | BMW Cars & Trucks

1 Answer

P1250 DTC on a 01 Mazda Protege

P1250 Mazda Fuel Pressure Regulator Control Solenoid

Since the code came back immediately this indicates that it is a hard fault. The solenoid is an electrical switch controlled by the ECM. In this case it controls vacuum provided to the fuel pressure regulator. On this vehicle locate the fuel injectors and the rail above them. At the end of the rail is the regulator which on it should have a vacuum hose. Check out the hose make sure there is not leaks or it is not coming apart. If it is okay the other end of it plugs into the solenoid. This is the failed component.

Nov 06, 2012 | Cars & Trucks

2 Answers


The location of WHAT???

Diagnostic Test Code (DTC) P1250 is a manufacturer - specific code which has a general description of "Pressure Regulator Control (PRC) Solenoid Circuit Malfunction".

The PCM monitors input voltage at Pin number 44 when the ignition is turned on. DTC P1250 sets when less than .44 volts are present. The possible causes are:
> PRC Valve malfunction (open or shorted internally)
> Open or short circuit between the PRC valve and the PCM (control circuit)
> Open or short circuit in the solenoid ignition voltage supply circuit
> Failed PRC valve (stuck open)
> Malfunctioning PCM

Feb 17, 2012 | 2000 Mazda MPV

1 Answer


P1250- PRC Solenoid Circuit Malfunction, could be a problem with you fuel pressure regulator, i would check the pressure of the fuel rail with a fuel pressure gauge depending on what BMW you own fuel pressure spec it different.E39s are supposed to have 50 +/-2 psi of operating pressure

Jan 19, 2012 | BMW 323 Cars & Trucks

1 Answer


P1250 is a faulty fuel level sender. Does your fuel gauge act funny?

Jan 14, 2010 | 1999 BMW 323 Series

1 Answer

Its blowing spark plugs, check engine light is on, runs like it needs a tune up and the exhaust smell is really bad. Diagnostic code is p1250

not sure how cars blow spark plugs, but I would say your problem is a corroded ECU.

not sure what that code is but if te ecu is wet the code is false.

read below

the ecu compartment is under the windshield on the passenger side on E36

you gain acess to it under the hood....
this compartment gets wet, the ecu lays on a flat surface in that

the bottom side of the circuit board gets wet and starts corrosion.

remove the ecu, take the bottom plate off, clean the bottom of the circuit
board with alcohol and a soft tooth brush.

you should be able to see the signs of corrosion or conductive build up.

this gunk bridges solder points doing all sort s of wierd things to your
car, including false sensor readings from asc/abs controllers and other

all the way to engine failure and worst case burnt and shorted wiring

I'm on my 3rd ecu, took me and the repair boys a few years to figure this
one out.

BTW: i would get that ecu mounted above that flat surface, use some sort
of standoff to raise it so that it is not laying in the wet.

Jan 06, 2010 | 1999 BMW 323 Series

1 Answer

Just got there codes for my 2000 323 and it didebt pass e test...p1250 p0173 p0170 p1189 p1188 dose anyone have any idea???

p1188: Fuel Control (Bank 1 Sensor 1)
p1189: Fuel Control (Bank 2 Sensor 1)
p0171 and p0173: These are very common codes on BMW's which can also be false codes, try clearing the codes and run the test again they may not come up again.
p1250: Never came across that....

Nov 25, 2009 | BMW X3 Series Cars & Trucks

1 Answer

Code po421 warm up cat bank 1 code p1250 control fuel air meter

Hi if the catalyst was replaced or eliminated this code p421 will always come out p1250 is that there's a problem with the ignition switch good luck

Sep 02, 2009 | Mazda MPV Cars & Trucks

2 Answers

HELP, MISFIRING: 1999 Audi A6 Quattro Avant Wagon

P1127 Long Term Fuel Trim mult.,Bank1 System too Rich

P1129 Long Term Fuel Trim mult.,Bank2 System too Rich

P1250 Fuel Level Too Low

P1300 Misfire detected Reason: Fuel level too low

P0154 02 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)

P0300 Random/Multiple Cylinder Misfire Detected

P0303 Cylinder 3 Misfire Detected

P0304 Cylinder 4 Misfire Detected

It sounds like there is a lot going on.

Good Luck


Sep 14, 2008 | 1999 Audi A6

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