P0068 The Ultimate Guide to Diagnose and Fix Engine Issues

P0068 - MAP/MAF - throttle position correlation P0299 - Turbocharger underboost condition U0422 - Invalid data received from body control module. That error code which I had on my Petrol A170 is caused by a slight leak between the throtal body and manifold that is picked up by the MAP ... P0068- MAF sensor throttle psition correlation. Not sure exactly what that means . It may mean that the TPS voltage does not agree with the MAF. Re: OBD codes P0068 & P0355 300m special ... WHEN MONITORED Engine Running, during all drive modes. SET CONDITION If vacuum drops below 1.5 Hg ... The problem here could be the MAP sensor, but it could also be a defective throttle body, a leak in the intake system, a broken hose, or just lost calibration. The ODBII code P0068 indicates a correlation issue between the Manifold Absolute Pressure (MAP) sensor, Mass Air Flow (MAF) sensor, and Throttle Position. Need a datalog to be able to help. I've seen this code before but the culprit was a improperly installed MAF Extender, most likely not the ... check for vacuum leaks up and around the upper intake plenum...it is possible to have a bad lower intake gasket causing the problem too. I'm wondering if it doesn't have something to do with the expected voltages from the TPS at a certain voltage from the MAF. JB4 shows code 0068 with No description but google search says something to do with a sensor for the intake manifold among some other things.