Home >> Volvo >> 2004 >> S80 Base, 2.5 59, FWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control Module (ECM) & Electronic Fuel Injection (EFI) Diagnostic Trouble Codes - 1 Of 11 >> ECM-959F: Accelerator Pedal Sensor. Faulty Signal (B6304S3; 1999) >> Faulty signal