A leak in the exhaust manifold or its gasket can allow exhaust gases to escape, which poses a health hazard to the car’s occupants and can result in erroneous readings by the oxygen sensor ...

A bad oxygen sensor, mass air flow sensor, manifold pressure sensor, throttle position sensor, a stuck-open exhaust gas recirculation (EGR) valve or an engine vacuum leak can cause a lean running ...

The manifold absolute pressure sensor reads the amount of pressure or vacuum (also called “engine load”) in the intake manifold, where outside air is divvied up in proper amounts and ...