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Home >> Volvo >> 2013 >> XC90 Base, AWD >> Repair and Diagnosis (Single Page) >> Steering >> Electronic Steering >> Steering Wheel Module (SWM) And Steering Angle Sensor (SAS) Diagnostic Trouble Codes >> SAS-0001: Led Group 1 Circuit. Signal Too Low (2003-2004) >> Diagnostic Trouble Code Information

Diagnostic Trouble Code Information

Condition 

Fig 1: Control Module For Steering Wheel Angle Sensor
GLL103210Courtesy of VOLVO CARS CORPORATION

The steering wheel angle sensor has two circuits each with 4 LEDs and 4 receptors which read off their individual code wheel. One circuit measures the steering wheel angle and the other measures steering wheel revolutions. If the control unit registers that the current passing through the LED group circuit is too low, diagnostic trouble code SAS-0001 or SAS-0025 is set, depending on the group.

Substitute Value 

Possible Source 

Fault symptom[s]