Jungheinrich Error Code 0802 -

Q: Can I ignore error 0802 and keep driving? A: No. The truck will either not move or will enter limp mode, making safe operation impossible. More importantly, ignoring it risks burning out the drive motor if the temperature sensor is actually detecting an overheat condition.

Q: Will disconnecting the battery reset error 0802 permanently? A: Temporarily, maybe. But without fixing the root cause (sensor/wiring/controller), the error will return, usually within minutes of operation.

Q: Is error 0802 the same as error 0801? A: No. Error 0801 typically indicates a short circuit of the temperature sensor (permanent low resistance). Error 0802 is a plausibility or range error (signal missing or out of bounds). jungheinrich error code 0802

Q: Can a low battery cause error 0802? A: Indirectly, yes. A very low battery can cause voltage drops that make the sensor’s signal unstable, triggering a plausibility error. Always charge your battery fully before diagnosing.

Q: My truck says “0802” but the motor is cold. What now? A: That points directly to an electrical fault (broken wire, bad connector, or dead sensor) rather than a real temperature problem. Follow the measurement steps above. Q: Can I ignore error 0802 and keep driving

If all wiring is intact, battery voltage is good, and connectors are tight:

Before taking things apart, try a soft reset. If all wiring is intact, battery voltage is

(Based on standard Service Manual procedures)

| Cause | Fix | |-------|-----| | Corroded connector | Replace pin/socket or whole connector housing | | Broken CAN wire | Repair or replace harness section | | Missing termination | Install 120‑ohm resistor (part no. 51157028 example) | | Faulty control unit | Replace (requires Jungheinrich software coding) | | Low voltage | Charge battery, clean main terminals |

When this code is active, the truck will usually enter a Limp Mode or Emergency Mode: