Home >> Volvo >> 2013 >> C30 T-5 R-Design, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control Module (ECM) Diagnostic Trouble Codes - 2 Of 8 >> ECM-24EC: Rear Heated Oxygen Sensor (Ho2S). Slow Regulation (B5254T3; 2007-2008) >> Slow Control