2002 leaks on passenger side floor board

Don A has an excellent answer, but if you have a sunroof, that is more likely the reason. The pipe runs down between the door pillar and the windshield and there is often a join there which can part. Be careful with compressed air as it can blow joints apart.

Water puddling on passenger side?

Nissan Forum https://www.nissanforums.com > threads > water-pudd...
Dec 19, 2004 - Hi, I have a 94 sentra xe and lately ALOT of water is on the floor on the passenger side. The sides and under the door are not wet, where ...

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My 2022 Nissan Sentra is leaking water into the front

JustAnswer https://www.justanswer.com > Nissan Repair
May 28, 2023 - I noticed water leakage about 1 month after I purchased the car. It had rained and there was puddle on the carpet and weather mat on the front ...

1 answer · Top answer: Hello and welcome to JustAnswer! Thank you for choosing us to answer your

Usually a sign of a plugged drain tube.
The HVAC box has a tube that drains the water onto the ground.
The tube should be at the bottom of the firewall near the passenger floor.

If it is coolant, your heater core is leaking and will need to be replaced, If it is water, you probably have a plugged drain for your air conditioner evaporator coil.

this leak must come from the heater metric.your car has a small radiator for heating.It's in the passenger side dash board.so you have to remove the dash board and check and repair the heater system.

There is a drain to the hvac box under the hood passenger side. It's most likely stopped up.

its caused by your aircon the hose may leaking under your dash board

Unless this happens in the rain as well, I would not worry about it. Likely in the car wash, far more water is coming in than the normal drain system can handle, therefore causing it to overflow. If you do have a drain obstruction, find the drain hose (small right angle hose on firewall passenger side) and roll it in your fingers to clear it.

Generally, water on the passenger side is the A/C drain tube.
Driver side generally means widshield or sun roof seal leak.
Did you wash the Mazda or did it rain prior to puddling?
Before disassembling the windshield seal, test ... with a water hose (Remove floormat and place a towel on newspapers on the driver's side floor).
There is a "smoke" test" that can more accurately find the leak. See if you local AutoZone will rent one (maybe free) to you.

check your heater coil under the dash on passanger side for leak at joint areas. it could be condensation from the AC condencer dripping down the line that goes into the firewall, if so seal that area with a good sylicone.

sounds like a bad cv joint to me. may need a halfshaft. check cv joint boots for being split open and leaking grease.