OEM Carrier Flame Sensor (48GS400192) for Model PY2PNB042060AB

This is the genuine OEM Carrier flame sensor, part number 48GS400192, factory-specified for the Carrier PY2PNB042060AB gas furnace. The flame sensor is a critical safety component in your furnace's ignition sequence — its 90° sensing rod sits directly in the burner flame and uses ionization (flame rectification) to confirm combustion is present. If the control board does not detect a microamp signal from the sensor within a few seconds of ignition, it shuts off the gas valve to prevent an unsafe condition. A failed or coated sensor is one of the most common causes of a furnace that lights briefly then shuts off after 5–8 seconds, often triggering a lockout fault code.

• Part Specs: OEM Part # 48GS400192 | 90-degree sensing rod with mounting bracket | Dimensions approx. 4.9" L × 1.75" H × 1.6" W | Direct factory replacement — no modifications needed
• OEM vs Generic: This is the genuine Carrier factory part, not an aftermarket substitute. OEM sensors are manufactured to exact rod alloy and geometry specs, ensuring consistent microamp output. Generic sensors can read inconsistent signals, causing nuisance lockouts or premature failure.
• Install Difficulty: 2/5 — A straightforward swap accessible through the burner compartment. Tools needed: 1/4" nut driver or Phillips screwdriver, fine steel wool or emery cloth (to clean rod if reusing), and a multimeter (optional, to verify microamp draw). Always shut off power and gas supply before servicing. Photograph wire routing before disconnecting.
• Warranty: 1-year OEM factory warranty against manufacturing defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Direct OEM replacement for the Carrier PY2PNB042060AB gas furnace. If you are unsure of fitment, cross-reference the part number on your existing sensor or consult your unit's data plate. Our team is available to verify compatibility before you order — no guesswork required. Order today and your part ships the same business day.