What does fault code TCM-0554 mean?

Diagnostic fault code details for TCM-0554 (Volvo C30 (2007–2013), Volvo C30 (2007–2013), Volvo C30 (2007–2013)). Repair service at OBD Tuning.

VOLVO

TCM-0554 - Main pressure solenoid. Current too 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?

The measured current through the main pressure solenoid LPS is too low compared with the requested current. The solenoid sits in the transmission's mechatronic unit and controls the transmission's system pressure. The cause is a damaged solenoid, a damaged or dirty connector or circuit board, or a damaged transmission control module.

Possible causes

Damaged solenoid
Connector or circuit board damaged or dirty
Damaged transmission control module (TCM)

What you can do

1Read the fault codes, clear TCM-0554 and drive the car to see whether it comes back
2Have a workshop open the transmission control system and check the solenoid for corrosion, poor contact, dirt or metal build-up. Check the oil level
3If the fault cannot be found or fixed, have a workshop replace the mechatronic unit

Symptoms you may notice4

Malfunction Indicator Light (check engine) lit or behaving abnormally
Unusual noise from the transmission
Shifts hard or jerky
High idle speed

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