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2000 Carrera 2 6 speeds: P1126 error code


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The day after I drive my car in heavy traffic with the engine coolant a bit on the high side, I get a P1126 error code.  I erase it and it does not come back until I drive in heavy traffic again.

 

The possible causes of this error have been listed in this Forum many times:

 

– Incorrect signal from MAF (#) sensor

– Intake air system leaking

– Fuel pressure too low

– Volume supply of fuel pump too low

– Fuel injectors fouled

 

Based on the circumstances that lead to the P1126 error in my car, would it be possible to identify which of the above causes are the most likely?

 

MAF and throttle body were cleaned 8,000 miles ago.

 

Thanks

 

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Has anyone tried this radiator temp reduction product that's being advertised on some of the car TV programs?

 

http://www.hyperlube.com/c3/Super-Coolant-c8.html

 

 

If your radiators are clean, and you coolant fresh (if you don't test it, it should be changed about every 5 years), you should not need any of these "magic bullets" advertised.  Most are little more than a corrosion inhibitor and a surfactant, both of which are already present in your present coolant.  And based upon Porsche coolant propensity to "not play nice" with other coolants, you really don't want to spend money on something you really don't need but that creates problems.

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