Bradford White RG2PV40T6N 40 Gallon 40,000 BTU Power Vent Gas Water Heater with Defender Safety System MECH-LEAK Error Fix: Tank Leaking from Bottom

Error code MECH-LEAK on the Bradford White RG2PV40T6N 40 Gallon 40,000 BTU Power Vent Gas Water Heater with Defender Safety System means: Tank Leaking from Bottom. Water is pooling under the water heater or visible at the base. First identify the source — not all water at the base means the tank is leaking. Check the T&P valve discharge pipe, the cold and hot water connections at the top, and the drain valve at the bottom for drips. Condensation on the tank exterior is normal during heavy cold water draws on gas models. If the leak is coming from the tank body itself (not a fitting), the inner glass lining has failed and the steel tank is corroding through. A leaking tank cannot be repaired — the water heater must be replaced. Shut off the gas and water supply and drain the tank to prevent flooding.

The most successful fix is "Replace the Drain Valve to Stop Leaking" (medium difficulty, ~45 minutes). Estimated DIY cost: $15-$25. HomeMD has 2 community-ranked fixes for this error.

This error is rated critical severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Yes — the top-ranked community fix ("Replace the Drain Valve to Stop Leaking") is rated medium difficulty and takes about 45 minutes. Tools needed: Pipe wrench, Adjustable wrench, Garden hose.

DIY cost: $15-$25. Professional repair typically costs $120-$180. Many homeowners save money by trying the top-ranked community fix first.

The Bradford White RG2PV40T6N 40 Gallon 40,000 BTU Power Vent Gas Water Heater with Defender Safety System has 8 other known error codes, including: 1-FLASH (Normal Operation — System OK), 2-FLASH (Thermopile Voltage Low), 4-FLASH (High Temperature / ECO Trip), 5-FLASH (Temperature Sensor Failure), 7-FLASH (Gas Control Valve Electronics Failure), and 3 more.

Error code MECH-LEAK also appears on 8 other Bradford White models: D-W-2-75T6BN Ultra Low NOx, MI50S6BN 50 Gallon 76,000 BTU Magnum Series Commercial Natural Gas Water Heater, MI50T6FBN 50 Gallon 40,000 BTU Natural Gas Magnum Commercial Water Heater, RE340S6 40 Gallon 4500W Short Electric Water Heater with Glass Lining, RE350T6 50 Gallon 4500W 6-Year Warranty Upright Electric Water Heater, RG240T6N eF Series, and 2 more. The fix may vary by model, so check each model's specific page for tailored repair steps.