If you also have codes 3702, 3703, etc. (multiple injector shorts), suspect a common supply voltage issue or ECU failure.
The DPF 100% soot icon and an active regeneration icon will usually appear on the dashboard display. Common Causes
To avoid this in the future, ensure the forklift is occasionally run at for at least 30 minutes to allow for natural passive regeneration. How to force parked regen on Hyster 100? - Facebook hyster forklift fault code 3701-15
Select "Clear Fault Codes" or "Reset" to refresh the system. When to Call a Technician
While many technicians can handle code 3701-15, call a certified Hyster dealer if: If you also have codes 3702, 3703, etc
If soot levels are over 75%, a forced regen may not work, and the filter will require professional manual cleaning or replacement. Check Sensors and Wiring:
: Once the cycle is successful, the fault code should clear automatically. If it remains, you may need to use the Hyster PC Service Tool or a similar diagnostic handset to manually reset the stored code. Warning: What Happens if Ignored? Common Causes To avoid this in the future,
One of the most specific and potentially confusing codes encountered by technicians and operators is .