Liebherr Fault Code

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0x016C

Hydraulic Temperature High / Power Derate

System

Cooling

Symptom

Hydraulic Temperature High / Power Derate

Diagnosis & fix steps

LOGIC: Hydraulic Retarder / Wet Brake Cooling Pump Flow Low. ACTION: Inspect mechanical flow sensor on the brake cooling manifold. Test brake cooling pump discharge pressure and check oil cooler matrix for dust clogging.

Red Seal field insights

Brake Overheat: Dissipating heat during continuous downhill loaded hauls requires high-flow oil cooling across wet brake discs; low flow forces power derates.

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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