CurtTSI
15+ Year Contributor
- 171
- 1
- Nov 28, 2003
I have occasionally been getting a CEL with a code P1400 (Manifold Differental Pressure) reading on the scanner. Car still runs great. After clearing the code I can drive it for some time before the CEL appears again. No other codes are present. Is the MDP sensor really bad and is this a common problem. Anyone else had this problem and, if so, was the problem corrected by replacing the MDP sensor? 
