Jungheinrich Error Code 0802 Verified
Check for individual dead cells or low water levels in lead-acid batteries.
If the error appeared after a parameter update, ensure all changes were saved correctly using the "SSP" button and required passwords in the diagnostic software. sd95d2cbd361a0b8d.jimcontent.com When to Call Professional Service
Stick to strict charging schedules and never operate trucks on a critically low battery.
Use a multimeter to test for fuse continuity. Replace any blown fuses with identical amperage ratings. 4. Examine Wiring Harnesses and Plugs
The "Lisa" or main interface board may be failing to send or receive signals. Blown Fuses: jungheinrich error code 0802
Frequently resolves the issue.
A healthy, terminated CAN-bus network should read approximately . A reading of 120 Ohms indicates an open circuit (broken wire or missing terminating resistor). Preventative Maintenance Tips
Use the JUDIT diagnostic software to identify the specific "missing node" on the network. Resources for Manuals
You can find official support and service manuals through the Jungheinrich Operating Manuals Database or by contacting authorized parts retailers like Machine Maxx USA Check for individual dead cells or low water
: Switch the truck off and on again. This can sometimes reset temporary "implausible" signal errors.
Error code 0802 is a system communication and logic fault. It specifically indicates an between the truck’s central control unit (often the ISM or MCU) and the tiller/handle controls.
Sometimes, the error code appears with a decimal point and a number, like 0802.5 or 0802.26 . The number after the decimal is the , which provides a higher level of detail about the 02 event.
Look for heavy corrosion on the battery terminals, which can restrict current flow. 3. Inspect Fuses and Relays A dead controller cannot communicate. Use a multimeter to test for fuse continuity
Providing these details can help identify if it's a specific component like the or a more complex controller issue . Share public link
Apply a small amount of dielectric grease to the pins before firmly reseating the connector. 5. Test CAN-Bus Resistance
When Error Code 0802 triggers, the main computer has lost contact with the traction (drive) controller for a period exceeding the allowed safety threshold. For safety reasons, the truck will typically lock out traction or hydraulic functions to prevent erratic behavior. Common Causes of Error Code 0802
A surprising number of 0802 errors stem from . Two physically identical boards can have different firmware versions – one programmed for drive/braking, the other for hydraulics. Swapping them between trucks or even between positions on the same truck can trigger an 0802 error.