What does Sandvik fault code 301-402 (Electrical) mean?

Q: What does Sandvik fault code 301-402 (Electrical) mean?

301-402 (Electrical) indicates: Multiple random sensor codes; Display flickering; Engine won't crank. Fix: CAN-Bus Communication Error (Node 301). LOGIC: The main controller has lost the "heartbeat" signal from the 301 node (usually the front frame module). ACTION: 1. Check for 24V power at the 301 module. 2. Inspect the "twisted pair" CAN wires for rubs at the center articulation joint. 3. Check terminating resistors (60 Ohms). FIX: Repair the harness at the articulation joint or replace the CAN node.

Sandvik Fault Code

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301-402 (Electrical)

Multiple random sensor codes; Display flickering; Engine won't crank.

System

Not specified

Symptom

Multiple random sensor codes; Display flickering; Engine won't crank.

Diagnosis & fix steps

CAN-Bus Communication Error (Node 301). LOGIC: The main controller has lost the "heartbeat" signal from the 301 node (usually the front frame module). ACTION: 1. Check for 24V power at the 301 module. 2. Inspect the "twisted pair" CAN wires for rubs at the center articulation joint. 3. Check terminating resistors (60 Ohms). FIX: Repair the harness at the articulation joint or replace the CAN node.

Red Seal field insights

The center hinge is the #1 failure point on Sandvik loaders. The constant "bending" of the machine shears the copper inside the wires while the insulation looks perfect. Do a "tug test" on the CAN wires at the pivot.

Same code keeps coming back?

That's a program problem, not a part problem. Book a 30-minute uptime review with Grant, a Red Seal Heavy Duty Technician.

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Read before you touch anything

This is general reference information, not a repair manual. It is for trained, qualified technicians.
Fault codes, meanings and procedures vary by model, serial number and software version. Confirm the code and the procedure against the manufacturer's service manual before acting.
Follow the OEM service manual, torque specs and your site's safety procedures: lockout/tagout, block raised equipment, relieve hydraulic, fuel and air pressure, and let hot systems cool.
You use this information at your own risk. Adventure Mechanical and AM Fleet Integrity accept no liability for damage, injury, downtime or loss arising from its use.
Not affiliated with or endorsed by any manufacturer. Brand names are used only to identify the equipment a code applies to.

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