The real multi-displacement structure turned off reverse pairs of cylinders, letting the car engine to have three dissimilar configurations and dislocations. The car engine P2658 code had an sumptuous diagnostics process, with viewing engine trouble/error codes on the air conditioning display. However, the structure was difficult, misjudged by customers, and a rash of random letdowns led to the technology being rapidly discharged. The poor running signs are reliable with a MAP sensor fault. In adding, in some cases, a bad MAP sensor will not throw an engine code. However, if you get the original meaning of the code, you can fix the car engine.