1992 B350 5.2L MPFI, 144,000mi. Hey guys the maintainence required light is on in this vehicle. What does it mean? and how do I diagnose the problem? Thanks for any assistance.

 

Use the Search function in this forum and enter the term "Key Dance."

This will explain how to get the van's on-board diagnostics to tell you what the error code is by flashing the dashboard's Check Engine light at you.

The number of flashes will equate to your error code, then you can proceed with troubleshooting.