OBDII Code P1400

[HotwheelsGSX]

First off, I have looked in DSM.org, Vfaq.org(poor Tom Stangl, has he gone kookoo with his Legomania?), and I also searched the archives of a few boards to no avail.
Now, to my question: OBDII error code P1400, could someone please tell me if it's the O2 sensor(s) or the Manifold Differential Pressure Sensor? I went to Autozone, they did the check and according to their scanner, P1400 means "manufacturer control auxilliary emissions controls", according to Chilton's it means "Mani. Diff. Press. Sensor Circuit Malfunction". Can you see my frustration?
All help is enourmously appreciated!!

Thanks!
Clem

 

[DSMRevolution]

P1400 - Manifold Differential Pressure Sensor Circuit Malfunction

The manifold differenetial pressure sensor outputs a voltage which is proportional to the negative pressure in the intake manifold.

The engine control module checks wether the voltage is within a specified range.

After the engine has warmed up, it runs at low or medium load.

The engine coolant temperature at the time is starting the engine is 65.4 degrees or more.

The sensor output voltage is 4.5V or more for 4 seconds or the sensor output voltage is 0.2Vor less for 4 seconds.


Cause

Manifold differential pressure sensor failed.

Open or shorted manifold differential pressure sensor circuit or loose connector.

Engine control module failed.



Please ignore my mispelled words. I am extremely tired, but I just can't seem to get enough of helping people tonight Lucky for you huh...

 

[boosted fukr]

hey...thisis to whoever posted this thread...godown to yur local book store or maybe ven parts store and get a book called Chiltons 95-99 Eclipse Manual Repai book.. It has everything in there you could possibly imagine about fixing DSM cars...engine codes, how to pull the engine, clutch install, water pump install, etc..everything...its a well worth getting $20 or 50$ i dunno i got mine outta the junkyuard luck me huh?

 

[DSMRevolution]

Originally posted by boosted fukr
hey...thisis to whoever posted this thread...godown to yur local book store or maybe ven parts store and get a book called Chiltons 95-99 Eclipse Manual Repai book.. It has everything in there you could possibly imagine about fixing DSM cars...engine codes, how to pull the engine, clutch install, water pump install, etc..everything...its a well worth getting $20 or 50$ i dunno i got mine outta the junkyuard luck me huh?

He has one. Re read his post.

 

[HotwheelsGSX]

Brandon, THANKS!!, that is extremely helpful info. you gave there...and, yeah, it must be my lucky day...

Fukr out of IL, I have the Chilton's manual, which doesn't coincide with what an OBDII scanner came up with, hence my question/frustration.

DSMRevolution, thanks for pointing it out to Fukr, who was frobably fooking at the time he/she read my worthless post...(all in good fun, fukr ).

Clem

 

[DSMRevolution]

reading your post just now cracked me up!! Anyways anymore help please let me know! PM me or whatever. I can get a diagnostics chart for you on how to check what actually needs to be replaced. Let me know.

 

[Defiant]

Originally posted by boosted fukr
hey...thisis to whoever posted this thread...godown to yur local book store or maybe ven parts store and get a book called

 

[FrankenTSi]

Question: Would this cause hesitation when the engine warms up?