P2138 pops up on my Buick with reduced engine power and traction control warnings. It seems to happen only when it’s raining or has recently rained, and more frequently (maybe two or three times a month) in the spring when puddles are everywhere. After reading another thread where someone’s leaky su…

Code P2138 Buick reduce engine power - FreeAutoMechanic Advice

There is a big electrical connector in the left kick panel or firewall. Water is getting in and shorting the wiring. The water intrusion needs to be found and fixed. The connector and contacts may need to be cleaned. It won’t take expensive parts to fix but it will take significant labor and a mech…

This is likely your problem and solution: [image] Rain, rain, go away! Maintenance/Repairs The other day, my wife told me there was something wrong with her car (2012 Chevy Malibu). The “Check Engine” light was on, the odometer area was reading"engine power reduced", “serv…

Sounds like a lot of hunting to find where the leak is. I don’t have a sunroof so we can eliminate that as a possibility.

Maybe a plugged drain in the front cowl, in front of the windshield?

Do you mean that hard plastic mesh under the wipers? If so, I keep them pretty clean. If not, you’ll have to be more specific.

Yes, that’s it, if lots of small stuff gets through the mesh it can clog up the drain below, water then backs up and can leak into the passenger compartment.

I bought the car with some minor body damage on the driver’s side. Can’t help but think somethings barely funked out of whack and a little bit of water is getting through some god-forsaken place that’s going to be a pain in the rear to find.

At the least, find that electrical connector and check for moisture. If it’s wet, dry it out and figure out a way to divert water away from it. There should be an access panel on the end of the dash, accessible when you open the door. Then clear the code.

I found AN electrical connector inside A panel, that one you can pry off inside the driver’s side door. Let’s just make sure I’m not off my rocker here: [IMG_0550] Disconnected and inspected all visible connections in this picture. No evidence of what I would call corrosion. Pretty dusty though, …

2008 Buick Lacrosse - P2138

Maintenance/Repairs

NYBo June 30, 2021, 7:17pm 4

This is likely your problem and solution:

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2008 Buick Lacrosse - P2138

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