What does fault code TCM-05B3 mean?

Diagnostic fault code details for TCM-05B3 (Volvo C30 (2007–2013), Volvo C30 (2007–2013), Volvo C30 (2007–2013)). Repair service at OBD Tuning.

VOLVO

TCM-05B3 - Hydraulic pressure solenoid, clutch even gears. Hydraulic pressure to low

System

Transmission Control Module (TCM)

Volvo models this fault code applies to

Applies to the following models:

4 models

C30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)

Show models by year and engine (10)

What does this fault code mean?

Hydraulic pressure on clutch 2 (even gears) reads lower than requested. The cause may be a low oil level or one of several damaged parts, such as the pressure sensor, the output stage for solenoid CSPS2, or solenoid CSMS2.

Possible causes

Low oil level
Damaged pressure sensor
Damaged output stage, solenoid CSPS2
Solenoid CSMS2, for clutch pressure, is damaged

What you can do

1Read the fault codes, clear TCM-05B3 and drive the car to see whether it returns
2Have a workshop check the transmission oil level. A low level can cause this fault
3Have a workshop open the transmission control system and inspect the solenoids and the oil level
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
Shifts hard or jerky
No automatic gear changes
No forward or reverse movement with a gear selected

General guidance for car owners. Diagnosis on the car can point to a different cause.