Liebherr Fault Code
Free · no signupE1
System
Diagnostic
Symptom
Not specified
Diagnosis & fix steps
High Pressure Cut-out.
LOGIC: The pressure switch at the receiver drier has detected >28 bar.
Red Seal field insights
Check the condenser fans (usually behind the cab or on top). If the fans aren't spinning, the pressure spikes instantly and trips E1 to save the compressor.
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.
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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