OEM Carrier Flame Sensor 48GS400192 for Model PY2PPB042060AB

This OEM flame sensor (part #48GS400192) is the factory-specified replacement for the Carrier PY2PPB042060AB gas furnace. The flame sensor — also called a flame rod — is a critical safety component that uses ionization/rectification to confirm the presence of a burner flame during each heating cycle. When it detects a valid flame, it sends a small microamp current signal back to the control board, allowing the gas valve to stay open. A dirty, corroded, or failed sensor cannot produce this signal, causing the furnace to light briefly and then shut off on safety lockout — typically within 5 to 8 seconds of ignition. If your furnace starts, fires up, then cuts out repeatedly, this sensor is almost always the first component to inspect and replace.

• Part Number: OEM Carrier 48GS400192 | 90-degree mounting bracket | Factory-matched specifications for PY2PPB042060AB
• OEM vs Generic: This OEM sensor meets Carrier's exact microamp output and rod material specifications. Generic sensors can exhibit marginal signal output that causes intermittent lockouts — especially as the control board ages — leading to repeat service calls.
• Install Difficulty: 2/5 — One of the easier furnace repairs. Tools needed: 1/4" or 5/16" nut driver, fine steel wool or emery cloth (to clean rod if reusing), needle-nose pliers. Turn off power and gas before servicing. Disconnect the single wire lead, remove the mounting screw, swap the sensor, and reconnect. Total time: 10–15 minutes.
• Warranty: 1-year OEM manufacturer warranty against defects. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY2PPB042060AB gas furnace. Always verify your unit's OEM part number on the data plate or existing sensor before ordering. Our fitment team is available to confirm compatibility before you buy — no guesswork, no return hassles. Order today and receive fast, same-day shipping on all in-stock parts.