P1400 Cel

[Wufei]

P1400 - Manifold differential pressure sensor circuit malfunction

Uh...oh? What does that even mean? Haven't really driven the car after it came on, it did seem a bit more sluggish and was boosting 12 psi at weird rpm's (namely before 3500). Dunno if that was cuz of the CEL or just me driving weird

Edit: Ok, after searching it seems that a lot of people have it and most don't bother since the sensor is $130 and there are no noticeable effects.

But what exactly does the sensor do?

 

[luv2rallye]

see http://www.dsmtuners.com/forums/sho...ghlight=manifold+differential+pressure+sensor

 

[CurtTSI]

I had the same problem with mine. Didn't seem to affect performance but the CEL was annoying. Eventually bought one from a local forum member for $20. Problem solved.