Home >> Volvo >> 2003 >> S80 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control Module (ECM) Diagnostic Trouble Codes - 11 Of 11 >> ECM-9520: Accelerator Pedal (AP) Position Sensor, Faulty Signal. Signal Too Low. Permanent Fault (B6294S; 2000-2001) >> Signal too low. Permanent fault