Diesel Data: Automotive Repair

Fault Conditions




P0100

Mass Air Flow Circuit. No Signal.







Fault symptoms
- CHECK ENGINE goes on after two driving cycles.
- Engine speed drops slower than normal when accelerator pedal is released.
- Misfiring can occur before trouble code is generated.

On-Board Diagnostics

Type of diagnosis:
- Continuous. But interrupted when fault criteria fulfilled and will not restart until next driving cycle.