The random misfire DTC indicates multiple cylinders are misfiring or the PCM cannot identify which cylinder is misfiring.
List of elements that might trigger the appearance of this code
- Camshaft position sensor (CMP)
- Low fuel: less than 1/8 tank
- Stuck open EGR valve
- Blocked EGR passages
Some tricks to help us for the diagnosis of the failure
One or more EGR passages may be blocked or partially blocked. If this is the case the Misfire Detection Monitor will indicate the EGR port to check for possible blockage.