OEM Carrier Flame Sensor 48GS400192 for Model PY1PJB048115AAAA

This OEM flame sensor (part #48GS400192) is the factory-specified replacement for the Carrier PY1PJB048115AAAA gas furnace. The flame sensor is a critical safety component: after the igniter lights the burner, the sensor uses ionization/rectification to confirm a live flame is present and signals the control board to keep the gas valve open. When the sensor rod becomes coated with oxidation or mineral buildup, its microamp signal degrades — causing the furnace to lock out after just 5–8 seconds of operation. Replacing this part restores reliable, continuous heating.

• Part Specs: 90-degree angle mounting bracket | Flame rod length approx. 1.6 in. | Overall dimensions approx. 4.9 in. × 1.75 in. | OEM part #48GS400192
• OEM vs Generic: This is a genuine Carrier OEM part, manufactured to exact factory tolerances for microamp signal output and rod metallurgy. Generic sensors may produce inconsistent readings, triggering nuisance lockouts or — worse — delayed shutoff.
• Install Difficulty: 1/5 — One of the easiest furnace repairs available. Tools needed: 1/4 in. hex driver or nut driver, needle-nose pliers. Turn off power and gas before starting. Disconnect the single wire connector, remove the mounting screw, swap the sensor, and reconnect — typically under 10 minutes.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier PY1PJB048115AAAA gas furnace. Verify the part number on your existing sensor or the unit's service data plate before ordering. Our team is available to confirm fitment prior to purchase — same-day shipping available on all in-stock orders placed before 3 PM local time.