Question about 1999 Saab 9-5

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Help!! Check engine light- code P1251????

My check engine light went off and my local mechanic said the computer reads a manufacturer code of P1251. Will have to take it to a dealership for more review, which costs an arm and a leg. Anyone familar with this code? Help! Last option before taking it in....

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  • irizarry324 Aug 21, 2008

    my saab 95 se gives me a code of p1251 how can i fix this code and tell

    me mag air and gas mixing

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Thottle Body needs replacing thats all, and make sure the spring is in tack/tight

Posted on Oct 20, 2008

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Output From Control Module Low

Posted on Jun 22, 2008

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Well the spring is not tight how can i fix that

Posted on Oct 21, 2008

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Code came up to P1251 with engine toyota 1KD - FTV. Engine lacks power while driving while engine light on dash board lights up


I have found those code to be shown in not only over boost conditions (wastegate) but EGR flow as well as Catalyst conditions.

Being that you are lacking power I suggest you check the EGR for being stuck open, or the catalyst for being clogged.

These engines do not like light driving, you should drive them hard from time to time to kep the catalysts clean of debris.

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My check engine light is on,why? On this model will the check engine light come on if i need an oil change? my car has runnimg fine and it hust turned on today. please help!


please read why the light comes on.

The vehicle computer system has self-testing capability. When the computer senses that there is a problem with some of the components it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" or "Service Engine Soon" light to tell you that there is a problem and your car needs to be looked at. To properly diagnose what is wrong, you need to take your car to a mechanic or a dealer. The technician at the dealership or a garage will then hook up the scanner to the car computer and retrieve the stored trouble code(s). Then he (she) will look it up in the service manual provided by a car manufacturer. The service manual contains the list of possible codes (about few hundreds) and describes what each code means and what needs to be tested. The code itself doesn't tell exactly what component is defective - it only indicates where to look, what engine parameter is out of normal range. The technician will have to perform further testing to pinpoint a defective part.

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Engine check light blinking


Take the car to a local parts store (AutoZone, Napa, Advanced Auto Parts) and they have hand help computers to read the error code and let you know what needs to be fixed.  They do this for free in my area so I assume it would be the same for you.  Obviously you can also take it to a mechanic to have them read it for you but that will normally cost you.  If you get the error code and need help with that, repost and I will try to help you out.

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Can I read the computer on my car with out the check engine light


hey snackdaddy20,

Yes it is true, those parts stores only see active codes because their scan tools are very basic. Now a dealership scan tool can read historic codes as well as active codes.

If it went off i really wouldnt worry about it, but if your really dedicated on wonder what it is then i would take it to your local dealership.

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if it's the check engine light. since your car is 1996 and newer take it to the local autzone, advance auto (free) have them plug into it and read the codes (OBDII). take a pen and paper so that you can write down what comes up. Or take it to your local mechanic and have him/her read the codes ($Free-$60). anything outside of the check engine light, you will need to go to a garage / dealer.

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Check engine light was on then went off now back onagain


Q1: What to do if my "Check Engine" light is on?
A1: The simplest way is to visit your local dealer for proper diagnostic. They have all the equipment and information needed to correct the problem. The problem might even be covered by the manufacturers warranty and possibly repaired free of charge.

Q2: Is it safe to drive if my "Check Engine" light is on?
A2: It really depends what code is stored and what caused it. In worst cases driving with "Check engine" light may cause more damage to the vehicle. A car may even stall while driving. If your check engine light came on, I'd certainly recommend to visit your dealer or a mechanic as soon as possible, just to be on a safe side. If the Check Engine light is flashing, this means that the engine computer (ECM) has detected that your engine is misfiring, which could damage your catalytic converter. Have the your vehicle inspected as soon as possible.

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