Home >> Volvo >> 2004 >> S80 Base, 2.5 59, FWD >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Control Module (ECM) Diagnostic Trouble Codes - 4 Of 11 >> ECM-2810: Front Heated Oxygen Sensor (Ho2S), Bank 1 Heating. Signal Missing. Permanent Fault (B6304S3; 1999) >> Signal missing. Permanent fault