VOLVO
TCM-05C2 - Multiplex function solenoid, clutch pressure/cooling odd gears. Hydraulic pressure too high
System
Transmission Control Module (TCM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Show models by year and engine (10)
- Volvo C30 (2007–2013)2008Engine D4204T only · Transmission MPS6 only
- Volvo C30 (2007–2013)2009–2010Engine B4204S3, D4204T only · Transmission MPS6 only
- Volvo C30 (2007–2013)2011–2013Engine B4204S3 only · Transmission MPS6 only
- Volvo C70 (2006–2013)2009–2010Engine D4204T only · Transmission MPS6 only
- Volvo S40 (2004–2013)2008Engine D4204T only · Transmission MPS6 only
- Volvo S40 (2004–2013)2009–2010Engine B4204S3, D4204T only · Transmission MPS6 only
- Volvo S40 (2004–2013)2011–2012Engine B4204S3 only · Transmission MPS6 only
- Volvo V50 (2004–2013)2008Engine D4204T only · Transmission MPS6 only
- Volvo V50 (2004–2013)2009–2010Engine B4204S3, D4204T only · Transmission MPS6 only
- Volvo V50 (2004–2013)2011–2012Engine B4204S3 only · Transmission MPS6 only
What does this fault code mean?
The hydraulic pressure is too high, so there is pressure on the clutch when an odd gear is engaged or disengaged. The fault may be caused by a low oil level, or by a damaged solenoid, solenoid CSMS1, valve CSM1 or pressure sensor.
Possible causes
- Low oil level
- Damaged solenoid
- Damaged solenoid CSMS1
- Damaged valve CSM1, which routes the pressure between clutch and gear shifting
- Damaged pressure sensor
What you can do
- 1Read the fault codes, clear TCM-05C2 and drive the car to see whether the code returns
- 2Check the transmission oil level yourself, or have a workshop do it. A low level can cause the fault
- 3Have a workshop open the transmission control system and inspect the solenoids and valve CSM1 visually
- 4If the fault cannot be found or fixed, a workshop must replace the mechatronic unit
Symptoms you may notice5
- Malfunction Indicator Light (check engine) lit or behaving abnormally
- Yellow warning symbol and text message in the display
- No forward or reverse movement with a gear selected
- Shifts hard or jerky
- No automatic gear changes
General guidance for car owners. Diagnosis on the car can point to a different cause.