John Deere 520425.07 – TEC / RLC / AIC / OIC / CSC: Received CAN Bus Messages, High Error Rate / Vehicle CAN Bus Error Counter High

Generated when the error counter for the vehicle's Controller Area Network (CAN) Bus reaches an unusually high level, indicating persistent communication errors within the CAN Bus network. This can compromise data transmission across the vehicle's control systems and is typically caused by physical wiring defects, electrical noise/interference, faulty connections, missing termination resistors, or incompatible devices overloading the network.

• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 8R Series Tractors
• 210K Tractor Loader
• 210L EP Tractor Loader
• 310K Backhoe Loader

1. 1

   Inspect the CAN bus wiring harness for physical damage, chafed wires, loose connections, or corrosion

2. 2

   Ensure proper 120 Ω termination resistors are installed at both ends of the CAN bus backbone

3. 3

   Check for sources of electrical noise (e.g., damaged alternator diodes, aftermarket electronics) near the CAN bus network

4. 4

   Monitor CAN Bus traffic using John Deere Service ADVISOR for incompatible or malfunctioning aftermarket ISO BUS devices

1. 1

   Isolate the Fault

   Disconnect implement ISO BUS connections and aftermarket monitors one by one to see if the error rate drops. If it does, the fault lies in the disconnected device or its stub harness.

2. 2

   Repair Wiring

   Repair or replace any compromised wiring harness sections or corroded connectors identified during the visual inspection.

3. 3

   Replace Terminators

   If a termination resistor tests out of specification (should read 60 ohms across the network when powered down), replace the faulty terminator.

4. 4

   Update Software

   Flash the control modules (TEC/AIC) to the latest software version to address any known bugs with CAN message processing.

5. 5

   Reset and Verify

   After resolving the physical or software issues, clear the codes, reset the error counter, and monitor the CAN Bus operation to ensure normal function is restored.