Low battery voltage or faulty power connections can drop communication across the board. Wiring/CAN-bus Faults:
Disconnect individual CAN components one by one and cycle the key to identify which part is causing the "no response" error. jungheinrich error code 0802
Pinched, frayed, or broken wires anywhere along the CAN-bus network will disrupt the data stream. Low battery voltage or faulty power connections can
Set your digital multimeter to measure . jungheinrich error code 0802