Question about 1999 Volvo S80
Transmission fault 000C
Diagnostic trouble code (DTC) TCM-000C is stored if the control module detects that the vehicle speed and engine speed (RPM) signals do not correspond with the programmed values and that an "incorrect" gear is being used in relation to the calculated gear. This is because solenoid S2 is stuck in open or closed position.
Diagnostic Codes: 000C, 002A, 002B, P0733, P0734, P0756
1. Clear codes from the Transmission Control Module (TCM).
2. With fluid hot, check transmission fluid for quality and level.
3. Test drive the vehicle. Accelerate from 20-60 MPH when in geartronic mode, gear 4. While doing this, watch input and output speed sensors with a scan tool.
4. If the code returns, the transmission is slipping, and the input and output speed sensors are updating, the problem is internal to the transmission.
5. If transmission is replaced, test ATF for coolant contamination per TNN 43-48. Replace radiator if necessary.
Potential Causes: Transmission Mechanical Problem
TCM-002B 4th gear. Incorrect gear ratio. This code sets when the actual gear ratio deviates by more than 10% of what is programmed into the TCM.
TCM-002A 3rd gear. Incorrect gear ratio P0756 - TCM-000C - Shift solenoid S2, hydraulic malfunction If the transmission is replaced, be sure the mating surfaces between the engine and transmission are bare metal and clean. If not, the engine may not start after assembly.
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Posted on Feb 24, 2012
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Posted on Jan 02, 2017
SOURCE: Volvo s80 water in transmission
It is not unheard of for the transmission cooler to fail in such a manner that you end up with coolant in your transmission, and transmission fluid in your radiator.
If this just happened recently you can usually just replace the radiator and flush the transmission as you said and be fine.
However water/coolant is extremely harmful to the automatic transmission, it can cause the internal clutches to break down inside it and fail.
If it were my vehicle I would take my chances and get a new radiator installed and flush both the cooling system and the transmission, this will more than likely cure your problem.
Posted on Feb 24, 2009
Try removing the battery for half an hour or so and then reconnecting (check you have all your radio codes etc before you do this).
Posted on Feb 07, 2010
the trans is goning to be expensive. 1999 and 2000 are the worst years of s80. PLAGUED with electrical and software problems. yes sure most of the problems have a fix now. but not free
Posted on Apr 25, 2010
Testimonial: "Thank you! You are correct when you say it's going to be expensive. I was worried about gaskets leaking. I too believe the vehicle is worth fixing."
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