Caterpillar Fault Code

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2348-9

Gauge Cluster Flash / Loss of Controls

System

CAN Bus / Comms

Symptom

Gauge Cluster Flash / Loss of Controls

Diagnosis & fix steps

LOGIC: SAE J1939 Data Link #2 Abnormal Update Rate. ACTION: Check CAN 2 terminating resistor resistance across pins CAN High and CAN Low (should measure 60Ω total with power OFF). Inspect main harness interconnects for moisture ingress.

Red Seal field insights

Indicates total loss or corruption of data packets between primary controllers on the second CAN backbone.

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.

Book an uptime review

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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