The gas flame lifts clear of the burner instead of sitting on it.

Possible cause: Pressure is too high. Go back over the regulator, gas cylinders, and pipework, and make any adjustments needed.

Yellow flame causing soot on gas appliances

Possible cause: Pressure is too low. Go back over the regulator, gas cylinders, and pipework, and make any adjustments needed.

Auto-Trail • Frontier • Gas Supply System

(Frontier, 2026 Model Year)

Error Code / Indicator	Symptom / Meaning	Possible Cause	Step-by-Step DIY Fix	Suggested Actions
`N/A`	The gas flame lifts clear of the burner instead of sitting on it.	Pressure is too high	Go back over the regulator, gas cylinders, and pipework, and make any adjustments needed.	DIY Safe
`N/A`	Yellow flame causing soot on gas appliances	Pressure is too low	Go back over the regulator, gas cylinders, and pipework, and make any adjustments needed.	DIY Safe