Single gas burner will not ignite but others work normally on Bosch gas cooktop.

Safety first: Turn off the burner and allow all parts to cool. Shut off gas if removing components.

• Check burner cap: Remove and reseat the burner cap so it sits flat and centered on the base.
• Clean ports: Use a soft brush or wooden toothpick to clear food or grease from the burner ports. Do not enlarge the holes.
• Inspect igniter: Verify the igniter electrode is not cracked and is positioned close to the burner edge. Clean carbon buildup with a soft brush.
• Check wiring: With power off, inspect the igniter wire from the electrode to the spark module. Reseat if loose. Replace the igniter electrode if it still does not spark.