What does fault code PSCM-U041868 mean?

Diagnostic fault code details for PSCM-U041868 (Volvo S60 (2011–), Volvo S60 (2011–), Volvo S80 (2007–)). Repair service at OBD Tuning.

VOLVO

PSCM-U041868 - Invalid Data Received From Brake Control Module. Algorithm Based Failures. Event information

System

Power Steering Control Module (PSCM)

Volvo models this fault code applies to

Applies to the following models:

7 models

S60 (2011–), S80 (2007–), V60 (2011–), V60 Cross Country (2015–), V70 (2008–), XC60 (2009–), XC70 (2008–)

Show models by year and engine (11)

What does this fault code mean?

The power steering control module receives vehicle speed information from the brake control module (BCM) over CAN. The fault is stored when that information is judged incorrect or unreasonable for a longer period. The cause normally lies in the module that sends the signal, not in the power steering itself.

Possible causes

Fault in the brake control module (BCM) sending incorrect speed information

What you can do

1Read and note the fault codes in all control modules, as this code normally follows from a fault in another module
2If you have a diagnostic tool: read the speed value from the brake control module in live data during a road test and check that it follows the car's speed smoothly
3Repair the root fault in the module that sends the signal, and clear this code only after the root fault's code has been cleared
4If the fault remains after this, have a workshop check the brake control module
5Steering is a safety system: avoid long drives with abnormal steering and have a workshop check the car

Symptoms you may notice3

Steering feels abnormally light at high speed
Steering feels abnormally sluggish at low speed
Other steering or handling problems can be felt

What the fault can affect1

The control module uses a default speed value instead of the real signal

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