OEM Carrier Flame Sensor 48GS400192 for Model PY1PPB042060AAAA

This is the factory OEM replacement flame sensor (part #48GS400192) for the Carrier PY1PPB042060AAAA gas furnace. The flame sensor is a critical safety component — it uses electrical rectification/ionization to confirm that a burner flame is present during each heating cycle. When the sensor rod becomes coated with oxidation or residue, its microamp signal degrades and the control board can no longer verify ignition. The result: your furnace lights, runs for 5–8 seconds, then shuts down on lockout — repeating the cycle until a fault code is triggered. Replacing this low-cost OEM sensor is one of the most common furnace repairs and often resolves a no-heat call in under 15 minutes.

• Specs: 90-degree mounting angle | Includes mounting bracket | Overall dimensions approx. 4.9" L × 1.75" H | Rod length approx. 1.6" | Factory-matched microamp output for Carrier IFC boards
• OEM vs Generic: This genuine Carrier OEM sensor is calibrated to the exact microamp threshold your control board expects. Aftermarket sensors can produce inconsistent readings, causing nuisance lockouts or — worse — delayed fault detection. OEM is always the reliable choice.
• Install difficulty: 1/5 — One of the easiest HVAC repairs available. Tools needed: 1/4" hex driver or nut driver, fine steel wool or emery cloth (to clean rod if reusing), multimeter (optional, to verify microamp draw). Always shut off power and gas at the furnace before servicing.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse when ordered by 3 PM local time.

Compatibility: Directly fits Carrier model PY1PPB042060AAAA gas furnace. The 48GS400192 is also used across multiple Carrier, Bryant, and Payne furnace platforms — verify your existing part number on the sensor body or your unit's parts diagram before ordering. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you buy — no guesswork required. In stock and ships today.