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  1. Volkswagen Passat B5 Discussion
    Hi I have an 03 passat 1.8t I have a p2181 code I've changed the sensor 3 seperate times as the car does not over heat at all. Stays at perfect temp with a.c. on and it being 100 degrees out. I did while fixing some things on it spill coolant out. I replaced it with 50/50 mix green coolant and...
  2. Volkswagen Passat B6 Discussion
    My first thread on the forum after lurking for the past few months so please bear with me! So the car is a 2007 Passat 2.0T FSI and a several weeks ago it threw the P2181 code. Searched the forum for answers (there were many!) so I figured I would try some of the things other members had done...
  3. Volkswagen Passat B6 Discussion
    My 08 Passat 2.0T threw code P2181 which is Cooling System Performance Code but I could not pinpoint what exactly caused the code. P2181 Cooling System Performance DTC So I took the coolant temperature sensor off and found it has so much residue around its copper head. I replaced it. And then...
  4. Volkswagen Passat B5 Discussion
    I understand the possibilities for the cause are the Coolant Temp Sensor (CTS), Thermostat, or Water pump. 1-2 years ago my Thermostat was replaced with an OEM Genuine VW/AUDI at my local indy. The same local indy shop just replaced everything related to the timing belt and upgraded the water...
  5. B5 Garage
    I popped a CEL for P2181 cooling system issue. Everything was working normally except I noticed that the SAIP was not running as usual on some cold starts. the existing coolant sensor was coolant soaked as the o-ring had disintegrated. Replaced sensor, o-ring and clip, cleared codes and life...
  6. Volkswagen Passat B5 Discussion
    Sorry guys the code is P2181 NOT P2128 When I was driving home from work yesterday I got a check engine light and I stop before I got home and had it read. the code was P2181 system coolant performance I've done some research and only found a couple post that relate to my specific vehicle. few...
  7. Volkswagen Passat B5 Discussion
    Im going to try to replace the cts first New Audi VW Green Coolant Temperature Sensor Water Temp Switch TS477 059919501A | eBay. and if this fails i will attempt a thermostat replacement. my temp gauge on the dash has been kind of wonky, im really hoping its the cts
  8. Volkswagen Passat B5 Discussion
    Has anyone had this code before? it says it could either of 3 things. Temp sensor, Coolant, and something else i can't remmeber off the top of my head sorry. my fluids are fine and my cars temp is reading fine as well. i could just replace the temp sensor because it is so cheap but if i don't...
  9. Volkswagen Passat B6 Discussion
    2008 Passat 2.0t sedan, has roughly 120k miles now, we bought at 60k and the only trouble we had out of it from then untill now was the intake manifold runner system which was replaced under the extended factory warranty for that specific issue... fast foreward to a few days ago, my g/f said the...
  10. New Member Introductions
    Hi!, everyone I'm new in these forum and looking for some answers. I own a Passat B6 2006 with a 2.0T AT transmission :thumbup: and lately been having the Check Engine light coming on intermittently:confused:. When I scan the car with a Lounge scanner either I have P0303 misfire in Cylinder 3 or...
  11. Volkswagen Passat B6 Discussion
    I have a 2006 2.0t 69000 miles, any suggestions on which I should try first? a thermostat? or the coolant sensor? How much do those cost?
  12. Volkswagen Passat B6 Discussion
    Hi, can anyone help me with this? I brought this passat 2006 2.0T with 125000ml from a dealer last June and the CEL turned on when I was driving it back home(I didnt go back to the dealer at that time, how studied I am!). I was busy all the time and finally decided to deal with the issue...
  13. New Member Introductions
    took the car to autozone, check engine light came back with a p2181 code. I war reading a few blogs about this issue, the first thing i check is that one of the fan (the aux i believe) was not running when the car was running. could that be the issue? :confused: also i have been noticing before...
  14. Volkswagen Passat B6 Discussion
    CEL just came up on my 2006 Passat 2.0T (72k miles). Took to Autozone for a quick scan and got back P2181 Coolant system performance error. Checked coolant level (perfect), temp gauge does not show any issues and car runs pretty much perfect. I am thinking it is the G62 engine coolant temp...
  15. B5 Garage
    Recently installed new Timing Belt, Water Pump, Check Valve, Thermostat, G-12, and CTS after purchasing a 2003 5.5 1.8t in order to clear P3081, and P0299. I thought everything was good, but the codes came back and brought their friend P2181 to play. The temp gauge seems to work fine again, so...
  16. New Member Introductions
    Hi All, A little about me. My 2003 GLX 4Motion wagon (aka Klaus) is my daily driver. I've become an accidental collector; I have a spec miata (1.6) a street miata (1.8), a restored '72 240z (tracked, not raced), a Suburban, and a trailer. Strangely, my neighbors don't seem to hate me. I live...
  17. Volkswagen Passat B6 Discussion
    Have an '07 2.0T w/92K on it. Check eng light came on over the weekend. Performace is fine etc. Went to AutoZone just to find the general area of the the trouble code since there's no one with a VAG Com nearby. The code is as the title indicates. For the last 5 months the temp gauge has...
  18. B6 Garage
    Hello everyone, I have a 2007 Passat 2.0T with a CEL. Here's the description of the code + freeze frame info: 1 Fault Found: 008577 - Performance Malfunction in Cooling System P2181 - 008 - Implausible Signal - MIL ON Freeze Frame: Fault...
  19. Volkswagen Passat B5 Discussion
    My boyfriend recently got a 2005 Passat GLS 1.8t, 115K miles, and so far everything has been fine with it. However, today as we were driving the check engine light came on. We pulled into an Autozone to get the code read, and they said it was P2181. It seems as though this is a relatively common...
  20. B5 Garage
    I have a 2003 1.8 AWM. CEL came on and was reading code p2181. Temp gauge stays solid at 190 in decent weather, but on cool nights the needle will fluctuate between 190 and one full notch below 190. I did tons of searching on here as to what to consider first and go from there. I purchased...
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