What is the MD305600 Voltage Output Range

[GSXRunner]

Hello,

I have the P1400 code that keeps coming back but doesn't set the CEL. I picked up a used MDP sensor online and replaced the one in my car, but I'm still getting this code. I have a vacuum pump and a voltmeter to test the output of the circuit, but I don't know what the output is supposed to read. Both of the sensors are giving me approximately the same voltage output from 0-20hg, so I don't know whether the used one I bought is just as bad as the one I replaced or if they're both good and there is another problem somewhere. I cannot find the specifications for this sensor anywhere. Has anyone else tested their sensor with a vacuum pump and meter? I'd like to know the range that others have measured so I know what the status is.

I get approx:

4.7V @0hg
4.1V @5hg
3.3V @10hg
2.4V @15hg
1.7V @20hg

 

[luv2rallye]

P1400 criteria.

 

[motomattx]

An egr valve thats not working can set the code.

 

[GSXRunner]

Thanks for the replies. This information is definitely helpful, but it still doesn't tell me what I should be reading at the sensor output based on given hg vacuum. There are a lot of things that could cause this code. Such as idle being too low, timing slightly off due to stretched belt. Anything that would cause the engine vacuum to dip below a certain level will cause the sensor to put out the wrong voltage. This is why I want to isolate the part from the engine, put real known values of vacuum in and get real known output voltages out. According to the flow chart in "sensor criteria 2", the voltage at the output should be between 0.8V - 2.4V at idle and I know my vacuum has at times been as low as 15hg at idle, based on my measurements, it would put the sensor output very close to the upper limit (2.4V) since I did measure approx 2.4V @15 hg. Since I'm measuring 1.7V @20hg (which is usually the highest vacuum you could get out of these engines), I would say these sensors (at least the two that I have) will never get anywhere near 0.8V.