Golf/GTI VI :: Got OBD-II Code - Coolant Leak?
Jul 4, 2013
Yesterday my car threw a CEL for the first time; I am currently APR stage II. Ran the code and came up with P2400. Code cleared, but after 1 cycle it appeared again.
Interestingly, on my way to a cookout today the car started yelling at me about low coolant. I pulled over and checked but didn't see any initial signs of leakage (was raining at the time though...). Continued to my destination and topped off with distilled H2O in lieu of G12 since I didn't have any immediately available. Once I made it back home, checked the reservoir again and saw that the level had dropped (probably ~ 1/2 cup or so). This time, I could see liquid on the belly pan, then on my driveway...
It looks like the P2400 code is indicating an issue in the leak detection pump circuit. Any chance that the coolant leak and P2400 code are related (leak shorted something out...??? I should mention I am not super familiar with the plumbing for the evap system in this car) or am I really this unlucky.
Issues with the car since purchase:
- Replaced clutch (stock would not hold stage 1 torque...)
- Wiring for radiator fan came loose, fans stopped working (took ~3 weeks to resolve due to resulting ECU issues...)
- ECU solder joint (EVAP circuit) damaged during re-flash after flashing to stock for dealer to address radiator fan issue...
- P2400 CEL
- Coolant Leak
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Had a P2181 come up twice now... both on startup on a cool morning. Came on again this weekend. Monday morning I noticed a small coolant leak under the front of the car directly in line with the passenger headlight, but it only leaks if I park the car with the front down a slope. I parked uphill on Monday night and no leak in the morning, but I backed in facing downhill on Tuesday and had a small leak when I checked late last night.
So, last night I broke out the UV/black light -- G12 seems to fluoresce yellow'ish. I couldn't see much, so it is a small leak. There is some wetness on the bottom passenger side of the rad that's dripping over the back side of the front bumper/lip. No wetness around any other hoses, thermostat housing, temp sensor, turbo lines. But that's all from the top view. No time yet this week to get it up on stands to pull the bumper/splash shields for a closer look either.
I am little concerned tho as there's some wetness around the valve cover and when I pulled the oil cap my eyes suggested a bit of fluorescence under the cap and inside the valve cover. I'm a little worried oil and coolant may be meeting up somewhere... And to think... I was just in the process of getting geared up to do brakes and plugs before getting a modest tune (stage 1).
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Yesterday after getting to work i noticed a few drips from under the front of the car, at first i shrugged it off thinking maybe it was condensation or whatever. After coming back to my car about 5 hours later it had made a good sized puddle under the car and i knew something wasn't right. Well on my lunch i got under it and collected the liquid only to find that it was coolant. To make matters worse on the drive home my temp gauge would go to operating temp then drastically drop to almost cold temp.. weird. And last but not least when i parked the car at home i noticed that the cooling fans did not stay on after the car was off, since it was about 95deg this seemed wrong. Took the car to the dealer this morning and I'm hoping its just a loose pipe or something little and not anything that will keep it in the shop for a long time. Car is completely stock except for cat back exhaust, 12,000 miles on the odo.
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So, I've had the car for a grand total of six days. Was just showing off what's under the hood to a coworker when I noticed droplets of pink and the coolant tank is almost at minimum. Leaking already? Calling the dealer now...I'm gonna have Mark 4 flashbacks/PTSD if this is a preview of coming attractions.
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02 Jetta 2.0L that I changed the thermostat. o-ring, and cover on when I first got the car about a year and a half ago.
I see dry g12 coming out from behind the cover and my coolant bulb had dipped quite a bit in recent weeks requiring a refill. What is most likely the problem here in such a short period of time? I've only put like 10k miles on the car in that period. O-ring couldn't have seated wrong because wouldn't the problem have been apparent immediately back when I did the job? Maybe I need to re-torque the cover? Cracked cover?
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My coolant says it is low. This happened last winter and I just had it topped off. This winter the car has been stored and I've been starting it every week and this time it sat for four weeks and started just fine but that's when the coolant light came on. The coolant is about an inch below the minimum line and there isn't any coolant on the ground.
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I've got a coolant leak here (I wiped away some of it before taking the picture):
Close up
This is the only place I can find coolant leaking and it's running down all the way to the water pump:
When I wiped away from just below the valve cover gasket it flaked right off and it doesn't appear there is any oil mixed in. I changed the oil today and it didn't appear to have any coolant mixed in either.
The coolant doesn't appear to have any oil in it's nice and pink as it should be. I started the car from a cold start and sat and watched the area waiting for it to leak but nothing ever came out, of course.
I know there shouldn't be coolant leaking from this area anyways but I don't know how else to explain the trail pictured. I definitely have a small leak somewhere as I've found coolant on the floor of the garage before.
Do I just replace the valve cover gasket and move on or is there something else I should be concerned with here?
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Yesterday I noticed nice fresh pink stain on fresh new concrete after a 20 minute ride, after coming back to the car an hour later. When I open the hood you there was distinct smell of wetness and dampness. I'm at 16k. Also visible at the bottom, under the pulleys dried stain on the plastic shroud. The coolant level is about quarter of an inch below min.
Furthermore I noticed oil build up around plastic intake tube just next to the firewall. So far no CEL and other issues, except my compartment lid in the middle console refusing to close and fully open.
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My car has been leaking coolant as soon as you put it in from it looks like the transmission area. Today I filled the car with water and drove it on the interstate to work. The car started getting jerky like it was losing power. So I pulled over and when I did the car shut off. There was excessive smoke under the hood and after removing the oil cap, smoke coming from there also. Tried restarting and it sounds like it just spins. No start. Looked at the timing belt, it's still intact. Put a wrench on the crank pulley and it's turning. What's wrong? Is it a goner?
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I noticed today when I was in a drive thru that ,y Jetta was smoking a little.... Went home ate my food and came out and looked underneath the Jetta and found a substantial coolant leak..... My heater core is bad I know this already... Would this cause coolant to leak outside the car or the carpet only??? I jacked up the car and checked for leaks... There is coolant all over the rear engine mount... And the driver side corner of the engine is pretty soaked in coolant....I can't pin point the leak..... There is a connection coming out of the side of the head that's got a little pinky crusty stuff on it but I can't see anywhere around it...
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Just purchased a 01 golf 1.8t 5spd and noticed it has a small coolant leak.. Left parking over 2 days in the same spot and it builds up a little puddle.. It's dripping down off of my oil pan and I haven't been able to trace it back to where the leak is coming from..
I've been told it could be my water pump? The car has 92k miles.
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It has happened to me several times.. The car asks me for coolant but today the reservoir was almost completely empty... I have no leaks and my cooling systems is working fine so where does the coolant go?
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So I parked on an incline last night for ~an hour or so, and suddenly my coolant light came on and my reservoir was completely empty. Sure enough, all the coolant had leaked out of the car. I am sure it's the water pump, but it doesn't seem to be a complete failed one because I picked up and filled my car's reservoir back up today and it hasn't leaked at all.
My guess is the pump isn't bolted on right and on the incline, the gasket is breaking it's seal, or some oil dripped down onto it when on the incline and the gasket swelled.
Nonetheless, my dealership is covering it on Friday, and they said they finally are making them with metal housings instead of plastic, and recalls should be going out soon (win for the MKVI crowd).
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I have a 04" GLI and I was thinking about doing a coolant flush. Looks like I have a slow leak. I was wondering where should I look in order to stop the leak. Put some coolant in about a month ago and now the coolant light is back on. Every morning when I pull out of my driveway there is a small leak under the driver side of my car. Is this an easy fix? If I do decide to do the coolant flush myself what is the recommended coolant replacement?
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I've noticed the past few days that my car has been leaking a small amount of coolant. I've only had the car a month, and it has 1300 miles on it. I'm in Texas so it's been about 100 degrees every day.
There's been a few times that I've turned off the car and the fan has stayed on for a few minutes, so it must be getting pretty hot.
I'm assuming this little bit of coolant is just coming from the overflow, but I've never had a new car do this so I'm concerned that there's a problem. I checked the fill level, and it's a hair above the LOW line, so it's within range.
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I have 2012 R with 33,000.00 miles on it. During regular service they detected that I have a coolant leak. They replaced a flange and determined that there was actually a head gasket leak. This is very unusual for such a low mileage. The car is still under extended warranty and they are in the process of replacing the head gasket. They told me today that they have to machine the head since there was some residue due to the coolant leak. This is all done at a VW dealer service.
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2003 GLI 2.0 engine
We have a significant coolant leak. The attached pic is of a coolant pipe which runs down from the rear of the head at the firewall. This was taken from the underside looking up.
[URL] ....
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My 2000 jetta glx is leaking coolant fast enough to empty the reservoir from full in about 10 minutes but only does it while running. Why this is or what I should look at fixing?
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My 04' GTI, 24v VR6, all stock, @ 107,000. I had a coolant leak from the t-stat housing. I installed all new housing, seals, and C-Pipe from GruvenParts. Already had a green CT sensor installed and the kit I got didn't come with one, so I didn't change it. Found out the leak was from the t-stat housing o-ring didn't fit the old housing. The new one fits perfect. I put coolant on the seals and burped it. Doesn't leak a drop. But still overheating, all the hoses have pressure and are hot, so no blockage....I noticed the fans were not coming on at all. The fans used to engage every other minute and run for 15 secs on high ONLY. Longer times, if not constantly w/ A/C on. I was wondering how to test the fans, sender, and/or fan control module to see which one of them isn't working. And which pinouts are what?
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My 2000 Jetta 2.0 has a coolant leak. I searched and found a lot of mentions of the flange on the driver's side, and I have coolant dripping from the bottom of the car in a location that seems consistent with that, but I felt all around the flange and the hoses that are connected to it and it feels dry.
Where else could it be coming from? (yeah, I could jack it up climb under and look, but I haven't had time yet). I also seem to have an oil leak around the same location, but the dipstick tube was cracked near where it went in to the engine so I'm hoping that was the source of the oil.
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The inter cooler to throttle body hose and it seems to have coolant all over it.
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