The random misfire DTC indicates multiple cylinders are
misfiring or the PCM cannot identify which cylinder is misfiring.
The underlying cause is often a lean fuel condition, which may be due to a vacuum leak
in the intake manifold or unmetered air getting past the airflow sensor.
Check also for a malfunctioning Camshaft position sensor (CMP) or stuck open EGR valve.
Thursday, December 31st, 2009 AT 1:47 AM