Liebherr Fault Code

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E 078

Engine Cranks No-Start / Click Only

System

Electrical

Symptom

Engine Cranks No-Start / Click Only

Diagnosis & fix steps

LOGIC: Main Starter Relay (M1) Command Circuit Timeout. ACTION: Perform voltage drop test across starter relay contacts under load. Verify signal output at module pin XA/29 and inspect starter engagement teeth for mechanical binding against flywheel.

Red Seal field insights

Starter Protection: Protects heavy-duty starters on Stage V engines from overheating during prolonged cranking under cold ambient conditions.

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