Briggs & Stratton generator code FC_2
High severity — Two LED blinks: the oil pressure switch closed because pressure dropped below roughly the 8 psi range, so the engine shut down to prevent damage. If low oil pressure persists, the unit may start, run for about 20 seconds, then shut down again with this code.
Applies to: Briggs & Stratton Home Generator System standby units with the fault-code LED indicator
Two blinks from the fault indicator, a pause, then two blinks again points to FC_2. Owners often notice this pattern right after the generator starts, runs for a short while — sometimes only 20 seconds or so — and then shuts itself back down, which is the system protecting the engine rather than the engine failing outright.
What it means
Two LED blinks: the oil pressure switch closed because pressure dropped below roughly the 8 psi range, so the engine shut down to prevent damage. If low oil pressure persists, the unit may start, run for about 20 seconds, then shut down again with this code.
Briggs & Stratton built this shutdown to act early: the switch trips at a pressure that's still well above the point where an engine would actually seize, so catching FC_2 and correcting the oil level usually heads off any lasting damage. It gets more serious if the code comes right back after a fresh oil top-off, since that points at the pressure switch itself or an internal engine problem rather than a simple low-oil condition.
Most common causes
- Oil level below the recommended dipstick mark
- Oil overdue for a change
- Failed oil pressure switch
- Internal engine wear
What you can check yourself
- Check oil level once the engine has cooled and add oil to the dipstick full mark using the grade specified in the manual
- Look for visible leaks around the filter and drain plug
- Reset the fault system (OFF 5+ seconds, then AUTO) and retest
All codes for this brand
Every Briggs & Stratton generator fault code — full list with what differs between models.
Related codes and symptoms
- FC_7 — High oil temperature, the other lubrication-side shutdown, triggered by heat instead of pressure
- FC_4 — Engine not starting, worth checking if low oil is also stopping the unit from cranking at all
- Low Oil Pressure Shutdown