Jungheinrich Error Code 0802
: Disconnect components on the CAN-Bus network one by one and cycle the key to see if the error changes, which can help pinpoint the failing module.
| Symptom | Likely cause | First action | |---------|--------------|---------------| | 0802 appears randomly | Loose connector | Re‑seat all CAN connectors | | 0802 after rain/washing | Water ingress | Dry connectors, check for damaged seals | | 0802 with dead travel | Traction controller offline | Measure CAN termination resistance | | 0802 with no lift | Hydraulic controller offline | Check power supply to hydraulic ECU |
: Indicates multiple areas or the general electrical system are affected.
Pinched, frayed, or broken wires anywhere along the CAN-bus network will disrupt the data stream. jungheinrich error code 0802
on your Jungheinrich forklift display, your machine has likely come to a halt. This specific event message typically indicates a CAN-bus communication failure
Several issues can disrupt communication between the control units. The most frequent causes include:
Check for individual dead cells or low water levels in lead-acid batteries. : Disconnect components on the CAN-Bus network one
Constant mast movement, vibration, and environmental moisture can break down CAN-bus twisted-pair wires or corrode multi-pin connectors.
(No travel, no hydraulics, main contactor/K1 remains open) Commonly Rooted In
Discussion: JUNGHEINRICH EFG316 error 0802 - Forklift Action on your Jungheinrich forklift display, your machine has
Locate the main electrical panel (usually found under the seat or main cover).
[Main Controller] <--- CAN-Bus Link ---> [Display / Interface Board] | | +----> Checked for: Voltage Drops +----> Checked for: Corroded Pins Loose Grounding Line Terminating Resistor Faults 1. CAN-Bus Network Interruptions
Error 0802.5 and 0802.26 appeared. Steering was dead. Diagnosis: Moved the steering controller from the right leg to the left leg; the error moved with it. A new controller was ordered, but the error remained. Further diagnosis: The replacement controller also had incompatible software. The working truck’s controller (same part number) did not solve the fault because its firmware was also mismatched. Solution: A certified Jungheinrich technician re‑flashed the new controller with the correct software. Lesson: Even new parts may need programming to match the truck’s specific configuration.
It sends an electronic handshake query to the , Steering Controller , and Hydraulic Controller .