Diagnostic Trouble Code (DTC) Information PSCM-U042868

Condition 

The control module is continually supplied with necessary information from the Steering wheel angle sensor module (SAS) via CAN communication. The control module checks the quality of the information from the Steering wheel angle sensor module (SAS).

The diagnostic trouble code (DTC) is stored if the control module detects:

• The signal that informs that the information from the Steering wheel angle sensor module (SAS) is incorrect.
• Incorrect value lasts longer than 2 seconds.

The control module's test for the diagnostic trouble code (DTC) starts in the event of:

• Ignition switch position II.
• Battery voltage between 9 - 18 V.

Fig 1: Locating Power Steering Control Module (PSCM)

Courtesy of VOLVO CARS CORPORATION

Possible Source 

• Fault-trace the Steering wheel angle sensor module (SAS).

Fault symptom[s] 

• Abnormally light steering at high speed
• Abnormally sluggish steering at low speed
• Steering/Other steering/handling problems