Troubleshooting Guide
How to Fix Dingli BA28RT Fault Code 21
Left Axle Lock Feedback Error (Power On)
Error Code: 21Equipment: Boom Lift
Error Code 21 Diagnosis
What This Code Means
Left Axle Lock Feedback Error (Power On)
Recommended Solution
Check wiring harness and connector of the left floating cylinder solenoid valve for damage. Inspect left oscillating axle lock valve block. Replace left floating valve block if faulty. Replace controller if valve tests normal.
Verified Technical Content
This troubleshooting guide has been reviewed and verified by the China Lift Supply Technical Team. Our certified technicians specialize in Dingli equipment diagnostics and maintain accuracy based on official service documentation.
Reviewed by Christopher Ray, Technical Director
Parts & Tools You May Need
Based on this error code, these items may help with your repair
Battery Charger
PartIndustrial-grade lithium battery charger for electric forklifts
Popular Dingli Troubleshooting
DingliBA28RT
Dingli Boom Lift
Machine Specs
EngineDeutz TD2.9 L4 / 55.4kW
Gradeability45%
Gross Weight18,400kg (40,565lb)
Power SourceDiesel
Why Trust This Guide?
- Based on official Dingli service documentation
- Verified by certified equipment technicians
- Updated with latest service bulletins