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P1250 DTC on a 01 Mazda Protege - Cars & Trucks

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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.

Posted on Nov 06, 2012


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Three codes po171-p1250-po660

PO 171 System too lean, PO 1250 PRC Solenoid, PO 660 Secondary Shutter valve.

Sep 03, 2016 | Cars & Trucks

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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

2 Answers

I have a 01 mazda protege. When im driving, it acts like it wants to cut off for a second then drive fine for a while. Also cut off at a stoplight.

check the fuel filter for clogging up. if a fuel filter gets bad it will lack power and it will stall at stops. when starting engine up, the debris is on bottom of filter. as you drive, if its bad it will continue to plug up.

Jan 17, 2012 | 2002 Mazda Protege

1 Answer

How do i get rid of a P0660 diagnostic code on my mazda 2001 protege?

Diagnostic Trouble Code (DTC) P0660 has a generic description of "Variable Inertia Charging System (VICS) Solenoid Valve Circuit Malfunction"
Diagnostic Trouble Code (DTC) P1569 has a generic description of "Variable Tumble Control System (VCTS) Solenoid Valve Circuit, Low Input"
Diagnostic Trouble Code (DTC) P1250 has a generic description of "Pressure Regulator Control (PRC) Solenoid Valve Malfunction"

These are all CIRCUIT failure codes. The circuits to each of these solenoids are SEPARATE circuits. The failure of one of these circuits SHOULD have no effect on the other two.

I did do a Technical Service Bulletin (TSB) search for your vehicle to see if there were any known problems that regularly cause these codes or if there are any computer programming issues that can cause these. The search came up negative - no known issues for ANY of these codes.

If your check engine light has been on for quite a while, it is possible that each of these failures occured at separate times and you simply did not know about the second and third failures because the check engine light was already on due to the first failure. Technically, you have three separate circuit failures no matter how it came about.

However, if these all showed up at the same time, I would be taking a hard look at the engine control wiring harnesses. It is that time of year for lots of rodent damage. They like to crawl up into warm engine compartmens and chew on things like wiring harnesses and vacuum hoses.

Another common denominator would be harness connectors. These wires all go through the same connectors, including the PCM connectors. It is possible that moisture and corrosion in a connector is shorting all of these circuits out. If you do not see any obviously damaged wiring harnesses, I would be taking connectors loose and examining the pins inside them.

Other than this, the only thing I can tell you to do is to diagnose each circuit individually. One may have a bad solenoid, while another has a loose connector pin, while the third one may have a broken wire. However, I think there is a real good possibility that if you find the problem with one of these circuits, the problem with the others will be close by.

Nov 16, 2011 | 2001 Mazda Protege

1 Answer

Code po120 mazda protege 1.5 L..code po110...code po115.....code po195

P0110 DTC - IAT Circuit Malfunction

P0115 DTC - Engine Coolant Temperature Circuit Malfunction

P0120 DTC - TPS A Circuit Malfunction

P0195 DTC - Engine Oil Temperature Sensor Malfunction

Hope this helps to identifiy.

Oct 04, 2011 | Cars & Trucks

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How to adjust a hydraulic clutch mazda protege 01 2 0L? or how do i change it by my self if the adjustment does not work?

With a hydraulic clutch there is no adjustment as the slave cylinder does that automatically by using the fluid.

Jan 12, 2010 | 2001 Mazda Protege

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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

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The volume and the on/off control along with the display do not work very well any more on my 2001 mazda protege

I also encountered the same problem about a week after i bought my 01 protege. I unfortunately dont know how to fix it, but I recommend you just scrap the original factory stereo and get yourself some kind of aftermarket deck as I did. WalMart or Canadian Tire have some decent decks for cheap prices as well as Best Buy or Future Shop who also install for free when you purchase from them. Your looking at about 60-160 dollars for a decent deck.

May 23, 2009 | 2001 Mazda Protege

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DTC P0106 mazda protege. code came on, cleared

Check connections etc at MAP sensor. If all good, replace it. Erase codes & retry. How's vehicle running, idling, any black smoke out tailpipe?

May 12, 2009 | 2004 Mazda 3

1 Answer

I need real Tech Help

You could try to figure out the codes they will tell you the problem do a google search for troubleshooting codes for mazda. It could tell you how. You turn the key on in a certain order so many times. a light will flash to tell you whats up with you car. but you have to find the chart from Mazda if they even have this.

This link may give your more info for what I'm trying to explain.

Aug 18, 2008 | 1995 Mazda Protege

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