: Look for corroded wire connections, especially where power cables connect to the display lid or junction box. Verify that the flat belt wire and other harness connections are secure.
: Switch the truck off and on again. This can sometimes reset temporary "implausible" signal errors. jungheinrich error code 0802
: Use a digital multimeter (DMM) to check the input voltage at the display or controller. Ensure the battery is fully charged and the main fuses are intact. : Look for corroded wire connections, especially where
: While travel might be stopped, some hydraulic functions may still be temporarily enabled depending on the specific truck model. : Look for corroded wire connections
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