Direct answer
What commonly causes gas range faulty wiring?
For a gas range with this symptom, the most relevant component families are Power cord / terminal connections, Ignition wiring harness, Control wiring harness.
Most relevant
Component families associated with this symptom
These are component types commonly connected with this malfunction. They are not model-specific part-number recommendations.
High relevance1
Power cord / terminal connections
Gas ranges still require line power for controls and ignition.
High relevance2
Ignition wiring harness
Damaged high-voltage spark wiring can prevent burner ignition.
High relevance3
Control wiring harness
Loose or burned connectors can interrupt valves, igniters, sensors, or controls.
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Functions being matched: Power cord / terminal connections, Ignition wiring harness, Control wiring harness