On most Jungheinrich trucks, CAN bus needs 120‑ohm resistors at each end.
Based on your diagnostics, here are the proven fixes:
| Diagnosis | Solution | |-----------|----------| | Pedal sensor voltage out of range | Replace complete accelerator pedal assembly (part varies by model; e.g., 52084703 for ETV 114). | | Corroded connector pins | Clean with DeoxIT D5, apply dielectric grease, and replace damaged pins using a Molex extraction tool. | | Chafed wiring harness | Repair with solder + heat shrink (do not use twist connectors). Replace entire pedal harness if multiple breaks exist. | | 5V reference shorted to ground | Trace and isolate the short. Remove the pedal connector; if 5V returns, the pedal is shorted internally. If still 0V, disconnect controller — if still 0V, harness short. | | Lost calibration | Perform manual calibration (above) or use J’Diagnose to reset pedal limits. | | Faulty main controller | Replace or repair controller (e.g., Jungheinrich parts #565903). Requires firmware reflashing. |
Technicians are directed to investigate three main areas:
A. Wiring Harness Issues (Most Common)
B. Sensor Failure
C. Controller Fault (Rare)
In an emergency, some technicians temporarily swap the dual pedal signals (if only one channel fails). However, this disables redundancy and may cause uncontrolled acceleration. Do not attempt unless you are qualified.
Step 1: Power Cycle
Step 2: Visual Inspection
Step 3: Check Termination (Advanced)
Step 4: Check Voltage Supply to Controllers
Before you start diagnostics, confirm that your truck displays these behaviors alongside error 0802: jungheinrich error code 0802
If your truck exhibits these symptoms, follow the systematic guide below.
Proactive tip: Some error code 0802 cases are resolved simply by replacing a $20 connector. Always start with the cheapest checks first.
If you are looking for a "paper" to fix this, you actually need the Jungheinrich Service Manual for your specific model (e.g., EFG 2xx). Look for the section labeled "Troubleshooting / Error Codes".
The quick fix: In 80% of cases involving error 0802, the issue is a broken wire in the steering axle cable harness due to repetitive turning motion. Repairing or replacing that harness usually resolves the code. On most Jungheinrich trucks, CAN bus needs 120‑ohm
