Jungheinrich Error Code 0802 Link Access

The following are potential causes for Error Code 0802:

Moisture causing green oxidation on the CAN-High or CAN-Low pins, isolating data packets.

Damage to the wiring harness leading to the main contactor coil can cause voltage leakage. If the control wires are pinched or shorted to a positive power source, the contactor coil may remain continuously energized regardless of what the CPU commands. Step-by-Step Diagnostic Process

Disconnect the battery for at least 30 seconds to clear temporary software glitches. jungheinrich error code 0802

Physical connection issues are the most common culprit behind CAN-bus errors. Locate the traction controller module.

On reach trucks (like the ETV Q20), check for on the outer lifting stages of the mast. Summary of Potential Solutions

, where the truck's main controller cannot "see" or communicate with a critical component. The following are potential causes for Error Code

If you have access to a known‑good truck of the same model:

Open the main electrical compartment and locate the fuse block.

If the error persists, you can search for a detailed service manual for your specific series in the Jungheinrich Operating Manuals Database. On reach trucks (like the ETV Q20), check

is a traction-related fault. Specifically, it indicates a “Drive Motor Temperature Sensor – Plausibility Error” or, in some technical manuals, a “Communication Interruption with Drive Controller (Temperature Channel).”

Industrial environments expose material handling equipment to severe vibrations, thermal expansion, and mechanical flexing. This wear can result in: