leaky coolant valve - is this VAGCOM code the same thing?

[kismetcapitan]

as mentioned in another thread, a on again/off again coolant leak was found in the coolant circuit that runs after the car shuts down. There's coolant residue on the driver's side intercooler pipe. It's not leaking much, but it's something that should be taken care of. This was the VAGCOM readout when I bought my car a month ago:

Friday,15,July,2011,12:28:56:02807
VCDS Version: Release 10.6.4
Data version: 20110418



--------------------------------------------------------------------------------
--------------------------------------------------------------------------------


Address 01: Engine Labels: None
Control Module Part Number: 4D1 907 558
Component and/or Version: 4.2l V8/5VT G 0002
Software Coding: 0006752
Work Shop Code: WSC 00000 785 00200
VCID: EBDFADC6B315
2 Faults Found:

18393 - Coolant Control Module 2 (J671): Malfunction
P1985 - 002 - Lower Limit Exceeded - Intermittent
18308 - Coolant Fan Control 2: Open or Short to Ground
P1900 - 004 - No Signal/Communication - Intermittent

Readiness: 0000 0000

So is this "plastic valve" (as described to me), the coolant control module? And should I worry about the fan? During the scorching hot end of August, I had no overheating issues at all, with the A/C on full blast of course, doing about 2000 miles of driving during that time.

[kismetcapitan]

$350 for a plastic valve??

[marklar182]

J671 is the control module for the smaller cooling fan, not the coolant valve. The larger cooling fan module is built into the fan. I believe J671 is bolted the drivers side frame rail behind the radiator.

J671= 4B0959501E $211.30

The coolant valve is 4B3121411 $222.46 (I also had this replaced due to a leak).

(Prices from genuineaudiparts.com)

[Chung]

There was this thread that indicated it might be the coolant temp sensor
http://www.rs6.com/showthread.php/22921-ok-what-did-they-do...

I too am getting this code.

[kismetcapitan]

I'm going to try to replace that G62 temp sensor and see if that clears the code. Maybe the bad sensor is causing the diagnostics to think the control module is bad. This is why I don't trust these here fancy electronics!! :P

[kismetcapitan]

The coolant valve is 4B3121411 $222.46 (I also had this replaced due to a leak).

I'm looking at this valve, and the leak is extremely slow. I'm wondering if I just paint this with silicone gasket if that'll hold the leak?? Ghetto-style auto repair!!

[Chung]

Do you have the part number for the G62 sensor? I might try to replace mine as well.

[marklar182]

From SteveKen in another thread;

Sensor:
059 919 501 A

c-clip:
032 121 142

o-ring if not included is:
N 903 168 02

[Chung]

Thanks. Sometimes I even have trouble finding these threads with google.